Which one would we choose?
Our choice: Oral-B iO Series 9 (Amazon, Boots)
2nd choice: Oral-B iO Series 6 (Amazon, Boots)
All of the iO Series handles share many great features. They all have a 2 minute timer, pacer, smart pressure sensor, 2 week battery life and a stylish design to name just a few things.
Importantly, the cleaning action and results are the same irrespective of the model.
But, if you want the very best brush from Oral-B with all the newest features and you are prepared to pay for it, the iO9 is the brush to pick. The iO10 is better, thanks to the iOSense smart charger, but it’s far too expensive.
It has a travel case in which you can charge the brush. It can track 16 different zones in the mouth when you brush. It then gives personalised feedback, highlighting areas for improvement, so you achieve a better standard of brushing.
In reality, it is the iO6 that is the most sensible purchase for most people.
It offers a blend of premium features and performance at a more affordable price point. You get the in handle display and real-time tracking, but just 6 zones rather than 16.
Video Comparison
In the video below we compare all of the brushes in the Oral-B iO range.
Key Differences
The following table lists the key similarities and differences between each series.
| Series 4 | Series 5 | Series 6 | Series 7 | Series 8 | Series 9 | Series 10 | |
|---|---|---|---|---|---|---|---|
 |  |  |  |  |  |  | |
| Recommended Retail Price (RRP) | £240 | £280 | £299.99 | £399.99 | £449.99 | £499.99 | £800 |
| Handle Colour(s) | Quite White / Matte Black / Lavender | Quite White / Matte Black / Pink | Black Onyx / White Alabaster / Anthracite Grey / Pink | Black Onyx / White Alabaster / Blue Electric | Black Onyx / White Alabaster / Violet Ametrine | Black Onyx / White Alabaster / Rose Quartz | Cosmic Black / Stardust White |
| Number of Cleaning Modes | 4 | 5 | 5 | 5 | 6 | 7 | 7 |
| Daily Clean | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Sensitive | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Super Sensitive | Yes | Yes | X | X | Yes | Yes | Yes |
| Intense | X | Yes | Yes | Yes | Yes | Yes | Yes |
| Whitening | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Gum Care | X | X | Yes | Yes | Yes | Yes | Yes |
| Tongue Clean | X | X | X | X | X | Yes | Yes |
| Interactive Display | X | X | Black & White | Black & White | Colour | Colour | Colour |
| Cleaning Mode Icons/Labels | X | Yes | On display | On display | On display | On display | On display |
| Real-Time Zone Tracking with AI | X | Yes – 6 zones | Yes – 6 zones | Yes – 6 zones | Yes – 6 zones | Yes – 3D teeth tracking – 16 zones | Yes – 3D teeth tracking – 16 zones |
| Number of Brush Heads Included | 1 x Ultimate Clean | 1 x Ultimate Clean | 1 x Ultimate Clean | 1 x Ultimate Clean | 1 x Ultimate Clean | 1 x Ultimate Clean | 1 x Ultimate Clean |
| Brush Head Replacement Reminder | Light on handle | Light on handle | On display | On display | On display | On display | On display |
| Travel Case | X | Yes | Yes | Yes | Yes | Yes – Power2go Charging Travel Case | Yes – Power2go Charging Travel Case |
| Battery Life | 2 weeks | 2 weeks | 2 weeks | 2 weeks | 2 weeks | 2 weeks | 2 weeks |
| Battery Charge Feedback | Power button LED | Power button LED | On display | On display | On display | On display | On display |
| Charging Stand | Standard charger (2 pin UK / 220-240v) | Standard charger (2 pin UK / 220-240v) | Standard charger (2 pin UK / 220-240v) | Magnetic charger (2 pin UK / 100-240v) | Magnetic charger (2 pin UK / 100-240v) | Magnetic charger (2 pin UK / 100-240v) | Magnetic charger with iO sense technology ( detachable 2 pin UK / 100-240v) |
| Noise (dB) | 64 | 64 | 64 | 72 | 72 | 72 | 64 |
| Other Key Information | Takes up to 16 hours to recharge | Takes up to 16 hours to recharge — 1 x Brush head refill holder included | Takes up to 12 hours to recharge | Takes up to 3 hours to recharge — 1 x Brush head refill holder included | Takes up to 3 hours to recharge — 1 x Brush head refill holder included | Takes up to 3 hours to recharge — 1 x Brush head refill holder included | Takes up to 3 hours to recharge — 1 x Brush head refill holder included |
Here is a bullet point list of the differences between the models we get requested to compare most.
iO Series 4 vs Series 5
- The Series 5 has 5 cleaning modes (daily clean, sensitive, super sensitive, intense & whitening) compared to the 4 of the Series 4 (daily clean, sensitive, super sensitive & whitening). The extra mode the iO5 has is intense.
- There Series 5 has cleaning mode icons on the handle that the iO4 does not have.
- You can change the cleaning mode on the iO5 before turning the brush on. You can’t do this on the iO4.
- The iO5 has real-time tracking of 6 zones that the iO4 does not have.
- The iO5 comes with a travel case and a refill holder that holds and protects 2 brush heads. The iO4 does not come with this.
- Both handles are available in 3 different colours. The Series 4 comes in quite white, matte black and lavender compared to the quite white, matte black and pink of the Series 5.
- The Series 4 has a recommended retail price of £240, £40 less than the £280 of the Series 5.
iO Series 5 vs Series 6
- Although both have 5 cleaning modes, they are different. The iO5 has daily clean, sensitive, super sensitive, intense and whitening, whilst the iO6 has daily clean, sensitive, intense, whitening and gum care. The iO5 has super sensitive whilst the iO6 has gum care.
- The iO5 has a brush head replacement reminder light in the cleaning mode button. The iO6 has this reminder on the display.
- The Series 6 has a black and white display in the handle whereas the iO5 has backlit icons.
- The Series 5 comes with a refill holder that holds and protects 2 brush heads. The iO6 does not come with this.
- The Series 5 takes up to 16 hours to recharge compared to the 12 of the Series 6.
- The Series 5 gives battery feedback via the power button icon. This is on the display with the iO6.
- The iO6 is available in 4 colours (black onyx, white alabaster, pink & anthracite grey) compared to the 3 of the iO5 (quite white, matte black and pink).
- The Series 5 has a recommended retail price of £280, £20 less than the £300 of the Series 6.
iO Series 6 vs Series 7
- The Series 7 comes with a magnetic charger that recharges the battery in 3 hours, compared to the standard Oral-B charger supplied with the Series 6 which takes up to 12 hours.
- The magnetic charger with the iO7 supports 100-240v whilst the iO6 charger supports 220-240v.
- The Series 7 comes with a refill holder that holds and protects 2 brush heads.
- The Series 6 is available in 4 colours (black onyx, white alabaster, pink & anthracite grey) compared to the 3 colours of the Series 7 (white alabaster, black onyx & blue electric).
- The Series 6 produces up to 64 decibels of sound compared to the 72 of the iO7.
- The Series 6 has a recommended retail price of £300, £100 less than the £400 of the Series 7.
iO Series 7 vs Series 8
- The Series 8 has 6 cleaning modes (daily clean, sensitive, super sensitive, intense, whiten & gum care) compared to the 5 of the Series 7 (daily clean, sensitive, intense, whiten & gum care). The extra mode the iO8 has is super sensitive.
- The Series 7 has a black and white interactive display compared to the colour display on the Series 8.
- Both models are available in 3 colour options. Both come in black onyx and white alabaster. The Series 8 is available in violet ametrine too, whilst the iO7 can be purchased in electric blue colour.
- The Series 7 has a recommended retail price of £400, £50 less than the £450 of the Series 8.
iO Series 7 vs Series 9
- The Series 9 has 7 cleaning modes (daily clean, sensitive, super sensitive, intense, whiten, gum care & tongue clean) compared to the 5 of the Series 7 (daily clean, sensitive, intense, whiten & gum care). The extra modes the iO9 has are super sensitive and tongue clean.
- The Series 7 has a black and white interactive display compared to the colour display on the Series 9.
- The Series 9 has full 3D tracking for your cleaning performance, monitoring 16 zones rather than the 6 of the iO7.
- The Series 9 comes with a power2go charging case that allows the iO to be charged inside whereas the Series 7 comes with a standard travel case.
- Both models are available in 3 colour options. Both come in black onyx and white alabaster. The Series 9 is available in rose quartz too, whilst the iO7 can be purchased in electric blue colour.
- The Series 7 has a recommended retail price of £400, £100 less than the £500 of the Series 9.
iO Series 8 vs Series 9
- The Series 8 has 6 cleaning modes (daily clean, sensitive, super sensitive, intense, whiten & gum care) compared to the 7 of the Series 9 (daily clean, sensitive, intense, whiten, gum care & tongue clean). The extra mode the iO9 has is tongue clean.
- The Series 9 has full 3D tracking for your cleaning performance, monitoring 16 zones rather than the 6 of the iO8.
- The Series 9 comes with a power2go charging case that allows the iO to be charged inside whereas the Series 8 comes with a standard travel case.
- Both handles are available in 3 different colors. Both are available in black onyx and white alabaster. The 9 Series is available in rose quartz colour also whereas the 8 Series is available in violet ametrine instead.
- The Series 8 has a recommended retail price of £450, £50 less than the £500 of the Series 9.
iO Series 9 vs Series 10
- The iO10’s magnetic charging stand has iO Sense Technology to give visual feedback (via multiple LEDs) on the brushing routine. The iO9 does not have this.
- The iO10’s pacer is often set to 20 second (sextant) intervals compared to the 30 second (quadrant) intervals of the iO9.
- The iO9 is available in 3 colours (black onyx, white alabaster & rose quartz) compared to the 2 colours of the iO10 (cosmic black & stardust white).
- The Series 10 produces up to 64 decibels of sound compared to the 72 of the iO9.
- The iO9 has a power adapter hardwired into the charging stand and a separate, detachable, adapter for the power2go case. The iO10 has just 1 detachable adapter for both the charging stand and power2go case.
- The Series 9 has a recommended retail price of £500, £300 less than the £800 of the Series 10.
These differences are explained at length later in this article. However, you might wish to learn more about each brush being compared. To do so, check out our hands-on reviews:
- Oral-B iO10 Review
- Oral-B iO Review (Series 9)
- Oral-B iO8 Review
- Oral-B iO7 Review
- Oral-B iO6 Review
- Oral-B iO5 Review
- Oral-B iO4 Review
Please note. Every effort is made to ensure the key differences listed are correct, but these differences are subject to change without notice. Some very subtle configuration differences and app customisations are excluded. Products and the box contents can be changed without notice and different variants can exist.
Detailed comparison: what’s the difference between the Oral-B iO Series 4, Series 5, Series 6, Series 7, Series 8, iO Series 9 and Series 10?
Since the iO Series launched in 2020, the range has increased from 3 different models to 7.
The range starts with the iO Series 4 and is topped off by the most feature rich and expensive model, the Series 10.
As the model numbers imply, the larger the number the more features and the higher the price tag.
The number of differences between each model in the range is fairly limited. Although if you compare iO4 to the iO10 then there are inevitably a few more.
Technically there are more similarities than there are differences.
Here is a list of ways in which all 7 models within the iO Series are the same. All of the models have:
- Built-in timer (2 minutes)
- Built-in pacer (30 seconds/quadrants (20 sextants on iO10))
- Built-In smart pressure sensor – lit red when the pressure is too great, green when it is just right and white when there is insufficient pressure
- Rechargeable lithium-ion battery offering 14+ days of use between charges
- Bluetooth technology to connect to a smartphone
- Frictionless magnetic drive system
- Oscillating-rotating cleaning action with micro-vibrations
- Use iO specific brush heads
So then, let me walk you through the main differences between these brushes.
One of the main differences is the number of brushing modes available on each handle.
You have the choice between 4, 5, 6, or 7.
7 is the maximum number of cleaning modes available on any Oral-B brush.
The modes and which model has what are listed in the following table.
| Cleaning Modes | Series 4 | Series 5 | Series 6 | Series 7 | Series 8 | Series 9 | Series 10 |
|---|---|---|---|---|---|---|---|
| Number of Modes | 4 | 5 | 5 | 5 | 6 | 7 | 7 |
| Daily Clean | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Sensitive | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Super Sensitive | Yes | Yes | X | X | Yes | Yes | Yes |
| Intense | X | Yes | Yes | Yes | Yes | Yes | Yes |
| Whitening | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Gum Care | X | X | Yes | Yes | Yes | Yes | Yes |
| Tongue Clean | X | X | X | X | X | Yes | Yes |
For most users, 1 mode, daily clean, is more than satisfactory. Although a second lower powered and more gentle mode such as sensitive can be appealing.
You don’t need lots of extra brushing modes. As I highlight later, the reality is the different modes don’t really affect the overall cleaning ability of the brush.
Each of the modes are designed to be run for 2 minutes. The only exception is tongue clean which is set for 30 seconds.
With each mode, differing amounts of power are used from the motor at different times. This impacts the angle of oscillation at the bristle tips to create brushing patterns and effects that are different from one another.
Just because the Series 7 does not have a tongue clean mode does not mean you can’t brush the tongue with the Series 7. You would just need to use a different mode.
To learn more about the differences, do read our Oral-B cleaning modes explained article.
All models bar the iO4 allows you to select the mode you want to use prior to turning the brush on.
The 5 does not default to the last used mode, whereas other models do.
5 of the 7 variants have a display built into the brush handle.
3 of them are colour displays, whilst the other 2 are black and white.
Which models have what is shown in the following table.
| | iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 |
|---|---|---|---|---|---|---|---|
| Interactive Display | X | X | Black & White | Black & White | Colour | Colour | Colour |
The black and white displays operate in the same way but are just not quite as nice to look at. But in all honesty, it has minimal impact on your use of the brush each day.
They do too allow additional functionality not possible on those models without the screen.
For example, you can change the handle language and the colour of the smart ring and even reset it right from the display.
With the iO4 and 5, you need to do these things from the smartphone app.
One of the biggest benefits of the display is that it makes it much easier to see which of the brushing modes you have selected.
There are no cleaning mode icons on the handle of the iO4.
The iO5 has 5 icons that get backlit but no actual mode name.
On the displays you get both an icon and the mode name, this makes it much easier to confirm which mode you are selecting and have set.
Another small but notable difference is the noise the motors/brushes make in operation. The iO4, 5 and 6 are quieter than the 7, 8 and 9.
| iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 | |
|---|---|---|---|---|---|---|---|
| Noise (dB) | 64 | 64 | 64 | 72 | 72 | 72 | 64 |
All models come supplied with 1 x Ultimate Clean brush head in the box.
A brush head should be used only for 3 months, as after this time it tends to become less effective.
All iO models have a reminder system built into the app and into the brush handle. How this reminder is displayed differs.
The iO4 and iO5 have a yellow light that gets lit in the centre of the cleaning mode button. The handle will vibrate too.
Those models with a display will show a notification on the screen.
The vast majority of iO models come with a travel case provided in the box.
The case will protect the brush handle from damage and accidental activation, whilst also protecting up to 2 brush heads.
The iO 4 is the main exception though. No case comes supplied with the standard model, although there are variants where this is supplied.
There are some more differences between the cases to be aware of too.
| | iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 |
|---|---|---|---|---|---|---|---|
| Travel Case | Yes (selected variants) | Yes | Yes | Yes | Yes | Yes | Yes |
| Brush Heads Held | 2 (selected variants) | 2 | 2 | 2 | 2 | 1 | 1 |
| In Case Charging | X | X | X | X | X | Yes – uses separate power adapter | Yes – uses separate power adapter |
As the table above shows, the most premium models, the iO9 and 10 have a travel case that only holds 1 brush head rather than the 2 of all the others.
This is in part due to the in case charging they offer.
What this means is that the rechargeable battery in either handle can be replenished, whilst inside the travel case, providing the proprietary power adapter is connected.
The power adapter is supplied in the box, but is specific to Oral-B.
The charging case doesn’t have a place to store the power adapter and the brushes can’t be charged via a USB cable.
100-240v is supported by the power plug.
It should be noted too that the quality of the case is better with the iO 7, 8, 9, and 10. They are a bit thicker and more durable.
The case colour does also depend on the variant you select. Black handled brushes typically come with a black coloured travel case and white cases with white handles.
Another little item is included with some models.
Known as the brush head refill holder, this is a little stand cum travel case for brush heads.
Up to 2 heads can be placed on the nodules that protrude from the silicone base.
It sits upright on a countertop and gives a home for spare and replacement heads. A removable opaque cap protects them whilst allowing airflow inside to dry wet heads.
Different variants do or do not come with this in the box, but expect to get this included with the iO5, 7, 8, 9 and 10.
Inside the handles of the iO Series is a rechargeable Lithium-Ion battery. All offer around 2 weeks of life on a full charge.
All the handles offer some feedback on the remaining charge, but how they do this is different.
Those with displays show on screen after each brushing session, a battery icon and a percentage reflective of the remaining charge.
The iO4 and 5 give feedback via the LED in the power button.
It will be lit with a white light most of the time. Only when the charge is around 10% or less will it pulse red.
Provided in the box with every brush is a charging stand. But these do differ depending on the model.
| | iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 |
|---|---|---|---|---|---|---|---|
| Charging Stand | Standard charger | Standard charger | Standard charger | Magnetic charger | Magnetic charger | Magnetic charger | Magnetic charger with iO sense technology |
| Charging Time | Up to 16 hours | Up to 16 hours | Up to 12 hours | Up to 3 hours | Up to 3 hours | Up to 3 hours | Up to 3 hours |
| Supported Voltage | 220-240v | 220-240v | 220-240v | 100-240v | 100-240v | 100-240v | 100-240v |
The 4, 5 and 6 all come with a standard Oral-B charger. This is the same as you would get with any rechargeable electric brush from Oral-B.
White in colour, irrespective of your handle colour, the brush fits only 1 way to it.
It takes 12-16 hours to recharge the brush using this stand which is compatible with 220-240v.
The magnetic charger provided with the iO 7, 8 and 9 is certainly more premium.
The magnet holds the brush on the handle and it can be placed in any orientation.
Whilst few of us ever need a toothbrush to recharge in just 3 hours, the stand will allow this. And comes in both black and white colour options, subject to the handle colour.
It also supports a wider voltage range. This means that if you were to travel to the USA from the UK for example, you need just a plug adapter and not a voltage adapter like you would with the standard charging stand.
The iO10’s stand is a little more feature rich still.
The iOSense smart charger as it is called, still offers the same magnetic attachment and 3 hour charging as the 7,8 and 9 Series. But, it also has additional iO Sense technology built in.
You have 6 LEDs and a clock on the front to help encourage even brushing and good coverage of the teeth as you brush.
The idea is you get meaningful feedback on how well you are brushing without having to refer to the smartphone application. You can get more insight into what it offers in our iO10 review.
The final meaningful difference between these models is the colour of the brush handles.
As a general rule, all models are available in black or white, but some are available in more options.
Black models tend to come with black coloured heads and white, white heads. Other colour handles may have either white or black heads, it varies per model and colour.
The models and available colour choices are shown below.
| | iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 |
|---|---|---|---|---|---|---|---|
| Number of Colour Choices | 3 | 3 | 4 | 3 | 3 | 3 | 2 |
| Handle Colours | Quite White / Matte Black / Lavender | Quite White / Matte Black / Pink | Black Onyx / White Alabaster / Anthracite Grey / Pink | Black Onyx / White Alabaster / Blue Electric | Black Onyx / White Alabaster / Violet Ametrine | Black Onyx / White Alabaster / Rose Quartz | Cosmic Black / Stardust White |
Does one clean better than the other?
No, simply put, they all clean as well as each other.
All 7 models within the iO range use the same brush motor with the same configuration.
Yes, models like the 8 and 9 Series do have extra cleaning modes enabled compared to the 4 and 5. But, these modes don’t necessarily change the actual cleaning results.
Using the intense mode won’t necessarily remove more plaque from the teeth and gumline.
Instead, the modes alter the user’s experience and comfort with the toothbrush.
There are arguments to suggest a toothbrush that suits a user’s needs or wants better, can result in improved cleaning of the teeth. But, the evidence for this, particularly clinical data is basically non-existent.
For many years Oral-B and other brands have offered multiple cleaning modes on electric toothbrushes and I have yet to see any meaningful data to suggest these extra modes pay dividends for the majority of users.
If you want whiter teeth, it is fair to assume you need a whitening mode. But, you don’t need a whitening mode to make the teeth whiter. The standard daily clean can achieve this.
Factors like your brushing time, technique and toothpaste all have an impact on the results.
If your brushing technique is bad, there is an argument that the real-time tracking and Artificial Intelligence (AI) built into many of the iO models can help you achieve better results.
This is because it actually monitors how you are brushing and the areas you cover and for what time. Personalised feedback is then gained which you can use to take corrective action.
Real-time zone tracking varies from one brush to another
Not all the brushes have the same level of tracking.
The models and their abilities are shown in the following table.
At the bottom of this section I have also included a video to help explain the differences.
| | iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 |
|---|---|---|---|---|---|---|---|
| Real-Time Zone Tracking with AI | X | Yes – 6 zones | Yes – 6 zones | Yes – 6 zones | Yes – 6 zones | Yes – 3D teeth tracking – 16 zones | Yes – 3D teeth tracking – 16 zones |
There is a strong argument to suggest that the iO9 and 10’s tracking of 16 zones can encourage you to brush all your teeth better than when you track just 6 zones.
The 16 tracked zones are as follows:
- Upper rear right
- Front surface
- Biting surface
- Inside surface
- Upper font
- Front surface
- Inside surface
- Upper rear left
- Front surface
- Biting surface
- Inside surface
- Lower rear right
- Front surface
- Biting surface
- Inside surface
- Lower front
- Front surface
- Inside surface
- Lower rear right
- Front surface
- Biting surface
- Inside surface
Whereas the 6 zones tracked with the other models are:
- Upper rear right
- Upper front
- Upper rear left
- Lower rear right
- Lower front
- Lower rear right
The Series 9 and 10 app screen is configured in such a way that you can clearly see which of the 16 zones you have and have not brushed.
16 dotted zones sit in the centre of the on-screen display in a circular formation. As each zone is brushed correctly, that dotted zone disappears until no dotted zones remain and all the teeth on the large visualisation turn white.
When only 6 zones are tracked, you can essentially spend all the time cleaning only 1 of the surfaces within that zone and the brush will still consider the zone brushed. That isn’t the case with the premium iO9.
The extra detail in the tracking can pick up on more specific, but important improvements needed in your brushing routine.
Of course, with any toothbrush, iO series or not, you want to be giving fair attention to all of the 16 zones so you have an even clean to the teeth and gums.
Thus, to master your technique the Series 9 and 10 do have that bit extra to push you to make sure you are making the correct contact with all surfaces.
But, how much difference this really makes in everyday use, is a bit subjective.
This is the same for the iO10’s iOSense smart charger. It is helping bring useful information and feedback to you quicker and with more ease. But how well it works will depend to a larger extent on you as a user.
There is no long term data available that analyses if apps and real-time tracking do have a beneficial impact compared to someone learning the correct brushing techniques via other means and implementing them.
To better understand and see how the 6 and 16 zone3D teeth tracking works, watch the following video.
Is one better priced than the other?
Yes, inevitably, the ‘cheapest’ and most cost effective model in the range is the least feature rich model, the iO4.
It has the lowest retail price of £240.
However, these retail prices are not what the brushes actually sell for.
I strongly recommend nobody pay the full retail price.
More often than not Oral-B electric toothbrushes are subject to sizeable discounts in the region of 50%.
Sometimes the discount will be greater at over 60% or a little less at just 30% off. But, as a rough rule expect to pay half the retail price.
Thus the iO4 now drops from £280 to a more acceptable £140.
Compare this to the iO Series 9 which has a £500 retail price or a more realistic everyday ticket price of £250.
And then we have the ridiculously priced iO Series 10, with an £800 retail price. Discounted, this drops to £400.
The following table shows the retail prices and average purchase price of each model.
It does also show the approximate ownership cost over 3 years for 1 person, when you factor in the purchase of replacement brush heads.
| iO4 | iO5 | iO6 | iO7 | iO8 | iO9 | iO10 | |
|---|---|---|---|---|---|---|---|
| Recommended Retail Price (RRP) | £240 | £280 | £299.99 | £399.99 | £449.99 | £499.99 | £800 |
| Typical Purchase Price (approx 50% off RRP) | £120 | £140 | £150 | £200 | £225 | £250 | £400 |
| 3 Year Ownership Cost (approx) | £208 | £228 | £238 | £288 | £313 | £338 | £488 |
Of course, the table and quoted prices are just a guide. The actual selling prices vary from one retailer to another. Some models may work out even better value than those listed above.
As you might expect, models with extra features or increased box contents do command a premium.
Although the iO4 is the cheapest, it is the iO6 that is for most users the ‘best value’.
It has many of the most desirable features of the iO range, including the in handle display. But, it still remains relatively affordable.
You, therefore, get the best of both worlds as some would say.
The iO10 is the most technically advanced and serves those that want it all better. But, the iO9 is a better choice as the extras of the 10 are not worth the price premium.
Ultimately, pick the one you feel is best suited to you and pay a price you are happy to.
Please note that all prices quoted are approximates and will vary based on location, supplier and time of purchase. These figures were correct at the time of writing and should not be relied upon as hard fact, but used as a guide during your decision process.
Conclusion
All things considered, the differences between each model in the iO Series range are relatively subtle.
No one toothbrush is going to result in drastically better cleaning results.
As you will have seen, it easily becomes confusing to know which variant is best to buy.
All of these brushes offer more than what you need.
You don’t need to spend as the iO Series commands to clean your teeth well.
The Oral-B Pro 3 3500 does a decent job for a fraction of the price! All things considered, we rate it as the best electric toothbrush.
That said, the iO marks a major design change in the Oral-B lineup of products and is considerably quieter.
The iO10 is the most capable. But the iO9 is the better choice because of the iO10’s price.
It is the iO6 that for most people is the most sensible purchase. It commands a premium, but it is a balance between feature sacrifice and price.
Of course, when it comes down to it, the choice is yours. All being well this comparison at least lets you make a more informed decision.
Your Opinions
Do you own or have you used the Oral-B iO Series?
Are there certain features that you really like or dislike?
Let us know what you think about this brush and let others who may well be considering purchasing one know your opinions before they do.
Hi Jon,
I find your reviews very helpfull. I have had the series 9 for two years now, but the display has never informed me I need to change the brush, why? So I change it when I think I need to. I thought this was a feature. I should mention I do not bother using the app, though I did intitally use the app a few times. I look forward to your reply.
Hi Hector.
This feature wasn’t initially available on the iO9 when it first launched. It is now.
If you update the handle, by connecting to the app, you should find that this is enabled.
Jon, this is the most comprehensive and best designed review I have ever seen!
Thank you for the good job!
Thank you for the kind words Peter. I am glad it helped.
Hi Jon,
Thank you for all the hard work you have put in to review and provide information about the different Oral B electric toothbrushes. It has certainly helped me understand the different models better.
Much appreciated.
I am glad it helped Rajeev. 👍
Hello, dear ORAL-B team.
Oral-B iO Series 7
I want to buy this toothbrush from the USA.
Will it work worldwide? In Europe?
Hi Tamara. Just to be clear, we are not the Oral-B team. We are a separate company and have written about their products.
If you buy the iO7 in the USA, the power adapter you get with the brush supports 110-130v and has a 2 pin US power adapter. You will need to source a voltage adapter and plug adapter to use this in Europe.
Alternatively, you could try to buy an EU charging stand separately and then you can just pop the brush onto that rather than having to worry about a voltage and power adapter.
Another option would be to buy the iO Series 9. This comes with a travel case that allows the toothbrush to be charged inside. The power adapter for the case supports 100-240v, but has a 2 pin US adapter. Therefore all you would need is a 2 pin US to 2 pin EU plug adapter.
Thank you.
Can the io brushes use the ordinary oral-b brushes or do they need the io ones?
Hi Eileen. The iO Series have their own range of brush heads and don’t use the normal head from Oral-B. They are not interchangeable.
Hi Jon,
Just wanted to thank you for the in depth review. I do find Oral brand very confusing, It feels like they are flooding the market to ensure customers are as confused as they can be so they either buy the most expensive or the cheapest.
I just noticed in the UK, Costco doing a deal from 14th of Feb for the iO6 for 7 – £95 which is a great price. That said i also want to share with your readers my personal view on toothbrush and touch on something you said before.
– Once you had a electric toothbrush you soon will know how long to brush your teeth and when to change the brush head. The key indicator is the color change from “blue” to whiteish.
– You will also learn how long each secontion needs to be brushed, in fact ask your dentist next time and they will show you how to hold it and what to do.
– My experience and my dentist said don’t be to tight with the toothpaste, put plenty (many don’t put enough).
– Brush in the morning and in the evening 2 min each and use floss (many ppl who have bad smell is due to the food between the tooth which causes the smell).
All the function IMHO is just marketing. They have no additional function and i would assume 99 of 100 customers would not even bother to use them.
I hope this helps those who think this new brush might do the trick, in fact the 2500 one is good enough.
Hi Essa.
Thanks for the comment and I agree with what you say about flooding the market. They could easily have a cheap, mid range and premium option, keep things simple etc, but by having something at every price point it ensures a consumer buys something.
I agree with many of the points. Not sure I do about the toothpaste, you only need a pea sized amount really.
You have understood the most important things though and sounds like you are on top of your oral health. Good work.
Hi,
I want to buy either the iO6 or iO9, to help make sure I’m sufficiently cleaning all surfaces of my teeth, so hopefully I can learn to do a better job. I don’t mind if sometimes I have to clean longer because the app doesn’t keep up. The iO9 is currently nearly 2.5x the price of the iO6 so I’m trying to figure out if it is worth the premium.
I’m really unclear about how the tracking in the app differs between iO6 and iO9. I know the iO6 doesn’t include a 3D tracking image in the app and I know the iO9 provides more detailed tracking (16 zones), but does the iO6 still track which surfaces you have successfully cleaned (inside, biting surface, outside) for each quadrant? Or to put it another way, for the extra money does the iO9 app give sufficiently more detail that it will make a real difference to how well I learn to thoroughly clean all my teeth?
Adrian.
The short answer is the 6 will probably do the job just fine for you. The basics & key things can be learnt from the app and the feedback it gives. It will help promote better brushing and perfect your technique if you are committed. Few people need the iO9 although it does track more zones as you say.
The io6 is looking at 6 zones (upper right, upper front, upper rear, lower right, lower front and lower rear). It isn’t tracking specific surfaces, front back, biting etc, it is looking at them as a whole.
The iO9 is tracking all the surfaces for these sections, hence the total of 16.
It can be hard to put into words, it’s one of those things that is best explained with visuals/demos.
I hope that helps.
Thanks. I’m still not clear though.
Does that mean if, for example, when cleaning my upper front teeth I spent all the time cleaning the outside surface (near my lips), and failed to clean the biting surface or inside surface (near my tongue), the iO6 might still think I’d done a good job for that zone?
Obviously I wouldn’t do that. But, it’s quite likely I might focus more on one surface than another without realising it.
Would the iO9 be more able to spot and report mistakes like that?
Hi again Adrian. Sorry if I wasn’t explicit enough.
Yes, unfortunately, with the iO6, for example, when cleaning your upper front teeth if you spent all the time cleaning the outside surface (near your lips), and failed to clean the biting surface or inside surface (near your tongue), the iO6 would still think you had done a good job for that zone.
I think it is all based around the logic (I might be wrong) that by seeing the on-screen visual and having to actively think about it a bit more, you do a better job of cleaning.
You have made me think a video/more detailed explanation of these differences would be worthwhile.
I hope this now clarifies things. Any more questions, please do ask.
I know you said smart brushes aren’t really worth it but I’ll last you know why I bought a two pack of the Oral B io6.
I’m 40 and my parents never taught me how to brush my teeth or encouraged me to do so. My teeth are also very wonky so I clearly should have had braces as a teenager but was never given the option.
I now have my own child and I’ve tried to encourage my child to brush their teeth but it’s not been easy to be consistent when I’m not brushing regularly enough myself and I have pretty poor technique.
We both went to the dentist recently. My child is starting to lose baby teeth but also has two that require fillings. It’s one thing having fillings in baby teeth but now that their adult teeth are coming through it’d be irresponsible to not to my best to ensure they care for their adult teeth as they start to come through. I lost two fillings near the start of COVID, both from baby teeth (yes, baby teeth at 40) – I got the dentist to remove one because food was getting stuck in a big gap left after part of the baby tooth snapped off then got him to remove the other one after the bulk of the tooth had snapped off. The teeth had died after he’d decided not to replace the fillings that’d been put in many years ago by my previous dentist.
So, I was aware that we both needed to work on our oral hygiene. We’re both quite in to games and getting achievements in games and working towards targets. This, as well on the coaching for coverage, pressure, time, routine etc made a smart toothbrush feel like the right choice for us. I’d have never paid full price but Amazon offered the io6 in a dual pack for Black Friday. With cashback, voucher codes etc I was able to get the two io6 brushes for under £50 each which seemed not to bad. So far it’s making us brush our teeth in the morning and evening. My kid even wanted to brush at lunchtime to earn a medal so I had to say that over-brushing has the potential to cause more damage than not brushing at all. We’re also waiting until at least an hour after eating. Because our technique isn’t great it’s taking between 2 and 4 minutes to be told we’ve brushed every area to an acceptable standard. Are you saying we shouldn’t move mouthwash at all? When should we floss. I’ve always kept floss as, even if I didn’t brush enough, I’ve always hated bits of food stuck between my teeth of on my gums so I’ve always tried to keep my teeth clean in other ways – just not brushing enough. Gamifying it does make me pay better attention to it, though. Ultimately I just want to be a decent parent and do what’s best for my child. I wish my dental surgery had a hygienist. I’ve known other people who’ve been taught how to brush their teeth properly by one.
Thanks for the comment and I am so pleased to read that the smart toothbrush that is the Oral-B iO6 is working for you. This is fantastic.
We say you don’t need a smart toothbrush as many are not motivated by the app and lose interest quickly. You and your son appear to be the opposite, this is great and if it makes the pair of you better at cleaning your teeth then this is a good thing and we certainly approve.
At around £50 per brush that is also a cracking price for what is a premium toothbrush.
It is important to be flossing (cleaning between the teeth). We generally recommend flossing before brushing, but ultimately flossing at any time is better than not at all.
With a good oral care routine, like you are on the path to achieving, you shouldn’t need to use mouthwash at all. It can help at times you might not brush, so after lunch for example. In some instances, it may be recommended by dental professionals to be used as an extra tool to help keep the mouth clean, but it isn’t essential.
It is surprising your dental surgery doesn’t have a hygienist, but if you are committed you could look for one locally, at another practice and go together with your son and discuss your oral care routine etc. It will cost you, but it may well be a good investment.
The following video I believe will be helpful to you and your son on your journey to better oral health: https://www.youtube.com/watch?v=7k3wjTOhYwY
To conclude, great job and it is wonderful to see you taking a keen interest in ensuring your own teeth and your sons are looked after. 👍
Jon,
Excellent review! And I’m not just saying that due to it having precisely what I was looking for today. A detailed break down of the differences between the iOs 7, 8 and, 9.
She’ll be gifting me the 7 from my Christmas wish list. In a surprise plot twist, I’ll be handing her the 9 at the same time.
Oral-B has added value to the iO9 by including two additional brush heads for a total of four. The iO8 meanwhile, now comes with three brush heads in total.
Added value is always appreciated. Bit miffed however that Oral-B does not offer the iO9 in violet or the iO8 in pink. These things exist at price points that should include all of the colors Oral-B has being available for each of their models. She’d enjoy and love a violet iO8, but it’s the rose of the iO9 that will get a sparkle going in her eye.
So while the added value of the two additional brush is appreciated, they’ve still got consumers such as myself spending money on what is essentially, (correct me if I’m mistaken) unlocking 3D renders and teeth brushing tips in the app, yes?
And here I’m doing it because, I’m shopping a color!
Thanks for the thorough review Jon
Have a great holiday!
Thanks for the kind words Will.
Sounds like you and your partner will have sparkly teeth this festive season!
I hear you on the colours. The choice would be nice, but unfortunately, there is no violet iO9 or pink iO8.
The iO9 does have an extra cleaning mode and power2go charging travel case over the iO8. But yes it does also in addition have the 3D teeth tracking within the app, which means it is tracking more areas of the mouth as your partner brushes.
I hope she likes it. It is a lovely toothbrush.
Hi Jon,
My wife and I have both got the iO7 toothbrushes. On the display its now saying “refill is used up” then it changes to “switched YES or NO.
Do you know what this means, we bought the toothbrushes at the same time and its showing on both brushes this week.
Andy. This should mean it is time to change the brush heads. Have you had them for about 3 months and been brushing 2 minutes twice a day each time?
Hi Jon,
Thanks for the quick reply. We have had them for about 3 months, only brush once a day though as we are both a bit lazy. 😀😀. I thought it might be to do with the brush heads, no mention in the instructions though. Thanks for your help.
Regards
Andy
No worries Andy. Please, for the sake of yours and your wife’s teeth do brush twice a day. You will benefit in the long run.
Perhaps set yourself the challenge and give yourself a reward at the end.
What shocked me is that the “travel” case does not have batteries in, to allow a few more days of charge similar to that of AirPods and their case?
Correct, it does not Rob.
Many people get the impression it does. It would potentially be useful.
Hi Jon… thanks for the great review… very useful… I am looking at the io series. I was looking at the io8 duo so that my partner could have her own brush. I think this is better for the app usage, is this the case? I like the 3d tracking of the io9 but don’t really want to buy two of them! What is the AI like on the others? Do they let you know where you are going wrong? Many thanks. The other option I guess is the Genius 9900. At the moment there is around £80 price difference between the two sets… so you think the io worth the extra? Matt
Hi Matt.
It is better to have separate brushes to track your brushing habits. It is possible to do it with 1, but to be honest it’s far from ideal.
The AI is comparable on all 3 models. The benefits of the iO9 tracking really are limited and not worth the extra expense when buying 2 handles.
The app will give you enough feedback in my opinion so don’t worry about the extra 3D tracking all that much on the iO9.
The configuration with the 9900 is very different. Definitely go for the iO series over this. The 9900 requires you to mount your phone in a holder and use your smartphone camera for tracking, much more of a faff!
You could look at the Genius X. This doesn’t require the smartphone camera to be used. Works like the iO but a little less glitzy and feature rich.
I would argue do you even need the iO Series at all. Don’t get me wrong, they are great. But, a basic model cleans just as well. If you and your partner can just make sure you are brushing for the correct time and the correct technique you could save yourself a lot of money.
Hi Jon!
Thankyou for the review, this was really good
Will deffo be buying the IO7 As they have an offer in boots for £150!
Hi Jon ! Thank you for your work, it is really useful. On Black Friday I bought the genius X and the io 7 (same price). But I don’t know which one I should keep since I am not really able to compare them. What do you think about that?
If you bought them at the same price, then I would probably go for the iO Series 7. It is the sleeker unit overall.
Do bear in mind that with the iO you don’t have the ability to charge the toothbrush in the case and replacement brush heads are more expensive.
In terms of quality and efficiency, is it similar ? What are the major differences ? Is it a big difference of price for the heads ?
Yes, the quality and efficiency of the clean is similar. The motor in the brushes are slightly different, but not significant.
At the moment, a typical brush head for the iO is working out around £10 compared to approx £3 for the Genius X.
I am sure the prices will fall in time, they are likely higher because they are new.
This comparison has more detail – although to be fair, I am comparing the iO Series 9 vs the X in this comparison.
We currently own a oral b teen brush. Unfortunately whenever my kids brush their teeth in the morning, the noise is enough to wake all others in the house.
How is the noise on the newer models?
Hi Pauline.
The iO series is quieter, by about 10 decibels. It is also a little less mechanical sounding, more of a loud humming sound.
The iO Series are the only ones from Oral-B to be quieter, all other brushes produce the same noise.
Dear Jon,
Thanks for your work. I am in the market for an Oral-B iO 9 and I see that sometimes the package mentions “Series 9” while some other times “Series 9N”.
I haven’t been able to understand the difference between the two, can you please help here?
Kind regards.
Hi Ed.
Yes, it is confusing and I am not 100% I can tell you precisely why they have different names, but what I have gleaned so far is.
For other brushes in the past ‘N’ has usually referred to the standard brush head, ‘CrossAction’ or in the case of the iO Series ‘Ultimate Clean’.
N seems to be the badge placed on models sold in central Europe. I note you might be in Italy, so this would apply here. Whereas in the UK it is just referred to as Series 9.
The other difference, from what I can tell is the 9N comes with 2 pin European power adapter, which would apply for Europeans in the likes of Italy, Germany, France etc.
In the UK we have 2 pin power in our bathrooms, but the pin size is different!
As far as I am aware there are no technical/performance differences between these models.
I know this is not a definitive answer, but I hope it helps.