Brenda MillerElectric toothbrushes3 products
For most folks, the iO2 is the sensible choice that gets the job done without overcomplicating things. If you want extra cleaning modes and app tracking to stay disciplined, the iO5 is your best bet, while the iO3 sits in the middle as a perfectly capable middle ground.
The middle-of-the-road cleaner
Folks who love a gadget
Budget-conscious households
| Feature | Oral-B iO3 | Oral-B iO5 | Oral-B iO2 |
|---|---|---|---|
| Price | £59.99 | £94.99 | £37.99 |
| Cleaning ModesThe iO5 offers the most variety with five distinct settings to tailor your brushing experience. | 3 modes | 5 modes (winner) | 3 modes |
| Battery LifeThe iO2 is the clear winner here, lasting significantly longer between charges than its siblings. | Long-lasting | Approximately 1.5 weeks | Up to 4 weeks (winner) |
| Smart FeaturesOnly the iO5 connects to an app to help you track your coverage, which is great if you need extra accountability. | Pressure sensor and timer | App tracking and pressure sensor (winner) | Pressure sensor and timer |
| In-the-box ExtrasThe iO3 includes a handy spare head, saving you a trip to the shop right away. | Case and spare head (winner) | Case and toothpaste | Travel case |
The middle-of-the-road cleaner
A solid, dependable tool that covers the basics well. It includes a spare head which is a nice touch for the value.
Folks who love a gadget
This is the one if you want to track your brushing progress on your phone. It has the most modes for specific dental needs.
Budget-conscious households
The iO2 is a workhorse with an impressive battery life that lasts for weeks. It strips away the gimmicks for a pure, clean result.
When you are looking at these three, you are really choosing how much tech you want in your bathroom. The iO5 is the only one here that plays nice with your smartphone, which is great if you are the type who needs a digital nudge to brush properly. If that sounds like a headache, the iO3 and iO2 keep things much simpler.
The iO2 is the real surprise here. It costs the least but has the best battery life of the bunch. It does not have the extra modes of the iO5, but for most of us, a good, steady cleaning cycle is all we need. The iO3 is the middle child, offering a bit more than the iO2 but lacking the app features of the iO5.
Durability and ease of use are the names of the game. All three use the same core iO technology, so your teeth will feel clean regardless of which one you pick. The real difference is how they fit into your life. If you hate charging things, buy the iO2. If you want to obsess over your brushing statistics, buy the iO5.
If you just want a reliable toothbrush, get the iO2. It is affordable, quiet, and the battery lasts long enough to take on a holiday without the charger. If you are serious about dental health and want the app to track your progress, the iO5 is worth the extra coin.
Skip the iO3 unless you find it on a deep discount, as the iO2 does almost as much for less money.
Prices on amazon.co.uk as of October 2, 2026. Prices may change.
Disclosure: We share affiliate links and can earn some money when you click on any of those.