The Oral-B iO Series 9 has a smart pressure sensor that detects not only when you're pressing too hard, but also when you're being too gentle (Image credit: Future) Oral-B has kept the toothbrush's cost down by providing a very basic plastic carry case for the iO Series 6 (Image credit: Future) Over time, the app will build up a picture of your brushing habits and start to suggest tips accordingly to help improve your oral hygiene. It's a small touch, but a thoughtful one that's more meaningful than generic advice. Now, there's an alternative: the Oral-B iO Series 6, which gives you the best features of the iO Series 9, for a substantially lower price tag. Oral-B hasn't cut any significant corners to achieve this; the iO9 Series 6 is fundamentally the same as its more expensive counterpart, and the overall experience is just as good. Unlike the Oral-B iO Series 9, the iO Series 6 has a regular charging base with a prong that fits into a recess in the handle (Image credit: Future)

Once you're done, turn off the brush and you'll be given a rating for your efforts. It doesn't matter if you end up taking longer than the typical two minutes to complete a thorough clean, but you'll lose points for not completing every part of your mouth, rushing, or applying excessive pressure. It's an impressive system, and will help you get a better idea of how good brushing should feel so you can adapt your habits on days when you choose not to use the app.The iO Series 6 is very similar to the iO Series 9 launched in 2020, and the handle is nearly identical (Image credit: Future) verifyErrors }}{{ message }}{{ /verifyErrors }}{{ We were enormously impressed by the performance of the Oral-B iO Series 9, and the Series 6 is basically identical, from first impressions to final testing.

The iO Series 6 has Oral-B's latest motor, which is extremely quiet and allows the brush to glide smoothly across your teeth. The handle has a smooth finish and, although not the lightest around, is evenly weighted and comfortable in the hand. The Oral-B app also offers a selection of programs to help you achieve specific goals if you have a concern such as bad breath (Image credit: Future) There are just two buttons to control the brush (one for cycling through menus, and another to control the power or select the current menu option), which keeps things refreshingly uncomplicated.The app is extremely simple to use; just begin brushing, and a graphic on-screen will show which section of your mouth you're currently cleaning using data from the location sensor in the brush's handle. The teeth in the image will gradually change from blue to white as you work your way around, showing when you've cleaned each part of your mouth thoroughly