Which one would we choose?
The iO Series 7 is the brush to go for based on features and price alone if I base this comparison on the recommended selling price of CDN $260.
The Series 9 is the top of the line model and will be more widely sold and promoted. However, it commands a $90 premium.
For that extra $90 the benefits are a couple of extra brush heads in the box, a travel case that allows you to charge the toothbrush whilst inside and 2 extra cleaning modes.
This therefore is not a justifiable premium in my mind over the Series 7.
But, the reality is that it is very likely that the iO Series 9 will actually sell for much less than its retail price and I suspect will actually sell on average around $280-300, thus making it a potentially justifiable premium for the extras it offers.
The following table lists the key differences between each series only.
If a feature is not listed, then it should be assumed that all 3 series have the feature. For example, all 3 have an OLED display and a built-in timer and pressure sensor.
|Series 7||Series 8||Series 9|
|Recommended Retail Price (RRP)||CDN $260||CDN $310||CDN $360|
|Handle Colour(s)||Onyx Black |
(IO8 M8.3B2.2B BK)
(IO8 M8.3A1.1B WT)
(IO8 M8.3B2.2B VT)
|Number of Cleaning Modes||5||6||7|
|Interactive Display||Black & White||Colour||Colour|
|3D Clean Tracking||X||X||Yes|
|Travel Case||Yes||Yes||Yes – Power2go Charging Travel Case|
|Number of Brush Heads Included||1||3||4|
|Box Contents|| – Oral-B iO Toothbrush Handle|
– 1 x iO Ultimate Clean Brush Heads
– 1 x Magnetic Travel Pouch
– 1 x Magnetic Charging Stand
| – Oral-B iO Toothbrush Handle|
– 3 x iO Ultimate Clean Brush Heads
– 1 x Travel Case
– 1 x Magnetic Charging Stand
| – Oral-B iO Toothbrush Handle|
– 4 x iO Ultimate Clean Brush Heads
– 1 x Power2go Charging Travel Case
1 x Travel Case Power Adapter
– 1 x Magnetic Charging Stand
iO Series 7 vs Series 8
- The Series 7 has a recommended retail price of CDN $260, $50 less than the CDN $310 of the Series 8.
- The Series 8 is available in 3 colours (black onyx, white alabaster & violet ametrine) compared to the 2 colours of the Series 7 (black onyx & white alabaster).
- 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 Series 7 has a black and white interactive display compared to the colour display on the Series 8.
- The Series 7 comes with 1 brush heads compared to the 3 of the Series 8.
iO Series 8 vs Series 9
- The Series 8 has a recommended retail price of CDN $310, $50 less than the CDN $360 of the Series 9.
- Both models are available in black onyx and white alabaster colour options. The 9 Series is available in rose quartz colour also whereas the 8 Series is available in violet ametrine instead.
- 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 Series 9 has full 3D tracking for your cleaning performance that the Series 8 does not.
- The Series 9 comes with 4 brush heads compared to the 3 of the Series 8.
- 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.
iO Series 7 vs Series 9
- The Series 7 has a recommended retail price of CDN $260, $100 less than the $360 of the Series 9.
- The Series 9 is available in 3 colours (black onyx, white alabaster & rose quartz) compared to the 2 colours of the Series 7 (black onyx & white alabaster).
- 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 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 that the Series 7 does not.
- The Series 7 comes with 1 brush head compared to the 4 of the Series 9.
- The Series 9 comes with a power2go charging case that allows the iO to be charged inside whereas the Series 7 comes with a magnetic pouch case.
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:
Please note. Every effort is made to ensure the key differences listed are correct, but these differences are subject to change without notice. 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 7, Series 8 and iO Series 9?
The number of differences between the Oral-B iO 7, 8 and 9 Series is not as significant as you might expect.
Technically there are more similarities than there are differences. Here is a list of ways in which all 3 series of the iO are the same. All of the models have:
- Built-in timer (2 minutes)
- Built-in pacer (30 seconds/quadrants)
- Built-In pressure sensor – lit red when pressure is too great, green when it is just right
- Rechargeable lithium-ion battery offering 12.5+ days of use between charges
- Bluetooth technology to connect to a smartphone
- AI technology to track the location of the toothbrush in the mouth
- Frictionless magnetic drive system
- Oscillating-rotating cleaning action with micro-vibrations
- Magnetic charging stand
- Quick charging – in around 3 hours
- Interactive OLED display to provide real-time feedback and encouragement
- Travel case to at least store and protect the handle and 1 brush head
It is primarily the box contents, number of cleaning modes and price that differs.
The top of the line Series 9 comes with 7 cleaning modes, whilst the 8 comes with 6 and the 7 comes with 5.
The modes and which model has what are listed in the following table.
|Modes||Series 7||Series 8||Series 9|
The different cleaning modes are far from essential and not needed. The extra modes have slightly different cleaning times and settings which may make them more suitable or practical for some.
Just because the Series 7 does not have a tongue clean mode that would last for 20 seconds on the Series 9, does not mean you can’t brush the tongue with the Series 7. You would just need to use a different mode.
The lack of additional modes does not ultimately have any bearing on the cleaning results.
To learn more about the differences, do read our Oral-B cleaning modes explained article.
All 3 of the variants have an interactive OLED display, however where the 8 and 9 series have a colour display, with the series 7 it is black and white.
Where the iO Series 9 stands out over the other models is the inclusion of the 3D tracking. All have the AI to work out the position of the toothbrush in the mouth, but only the Series 9 offers a 3D representation of this within the feedback that the brush and app offers. Essentially, the top of the line model makes it easier to visualize where you are doing things right and wrong.
The number of brush heads included in the box with each model differs.
The 7 comes with 2, the 8 comes with 3 brush heads and the 9 comes with 4 brush heads.
All models use the iO Ultimate Clean brush heads.
All models come in both a black onyx and white alabaster colour option.
With the Series 8 and 9, there is the choice of a third colour.
That choice is violet ametrine in the Series 8 and rose quartz with the Series 9.
The difference here is the colour of the toothbrush handle only.
With the black onyx models, the handle, heads, charging stand, travel case and power adapter are all black in colour.
With the white alabaster the handle, heads, charging stand, travel case and power adapter are all white in colour.
When it comes to the rose quartz and violet ametrine variants, the handles are either colour, but all the accessories are white.
With the Series 7 and 8 the travel case holds the brush handle and up to 2 brush heads. However, the travel case with the 9 Series holds the brush handle and just 1 brush head.
However, the 9 Series has an extra feature not available on the 7 and 8.
Called ‘power2go’ the travel case with the 9 Series allows the iO to be recharged whilst sat inside.
The toothbrush is charged via a detachable power adapter.
The brush cannot recharge without the power adapter being connected.
The power adapter is proprietary to Oral-B products. It does not use the more desirable USB Type-C charging.
All of these differences have a knock on impact on the price. There is a $100 difference in the recommended price of the 7 Series compared to the 9 Series. CDN $260 compared to $360.
The Series 8 is in the middle at $310.
These differences are because of the perceived value Oral-B places on the additional box contents and features each model offers.
Does one clean better than the other?
No, simply put they all clean as well as each other.
Yes, the 8 and 9 Series does have extra modes compared to the 7, but these modes don’t necessarily alter the actual cleaning results.
Instead the modes alter a users experience and comfort with the toothbrush.
There argument to suggest a toothbrush that suits a users needs or wants better can result in a better clean of the teeth. But, the evidence for this, particularly clinical data is basically non existant.
For many years Oral-B and other brands have offered multiple cleaning modes on electric toothbrushes and I have yet to say any meaningful data to suggest these extra modes pay dividends for the majority of users.
Is one better priced than the other?
Yes, the Oral-B iO Series 7 is the best value at CDN $260.
The 8 Series commands a $50 premium and the 9 Series a $100.
Yes, the 8 and 9 do offer a fraction more in the box as well as extra cleaning modes, but the ‘extras’ don’t really add up to the real world price difference.
The logical and most sensible purchase is the Series 7. However, the likely selling price of the 9 Series is likely to be more heavily discounted, in the region of 20-25% and as such it will likely sell for $280-300 making the additional brush heads and power2go charging travel case worth the extra spend.
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.
The differences between each model in the iO Series is relatively subtle.
As you will have seen it easily becomes confusing as to know which variant is best to buy.
All of these brushes offer more than what you need.
You do not need to spend as much as this or find a toothbrush with as many features as the iO Series to clean your teeth well.
That said, the iO marks a major design change in the Oral-B line up of products and is considerably quieter.
On paper alone, the iO Series 7 is the most sensible purchase based on what you get for the price. With a $100 premium price for the 9 Series, it is not the sensible choice for the limited differences.
However, the reality is that the actual selling price, not the recommended, will be such that the Series 9 will be the logical buy because the price premium over the 7 Series will be justifiable.
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.