Oral-B iO6 Review: a high-tech toothbrush that cleans great but drains fast

I’ve been using the Oral-B iO6 for a few weeks now, morning and night, after years with cheaper Oral-B models and a Philips Sonicare. I didn’t buy it to "treat myself" – my dentist told me to stop butchering my gums with a manual brush and suggested an electric one with a pressure sensor. I went for the iO6 because it was on discount and sat in the middle of the iO range in terms of price and features.

First reaction when I unboxed it: this is a lot of tech for something that just has to scrub teeth. Tiny screen, app, multiple modes, coloured light ring… Honestly I was expecting a gimmick. But after a couple of days, I had to admit my teeth did feel cleaner than with my old brush, especially around the back molars and between slightly crooked teeth.

That said, it’s not perfect. The biggest issue for me is the battery life. If you’re coming from a Sonicare that lasts three to four weeks, getting roughly a week or so out of this feels a bit stingy, especially at this price. It’s not unusable, you just have to think ahead and charge it more often than you’d expect for a modern device.

So overall, it’s a very capable toothbrush that actually improves your brushing, but with a few compromises: battery that’s just okay, heads that aren’t cheap, and features you might never use (like the app). If you want a straight answer: it cleans very well, but it’s not some miracle gadget that fixes everything for free.

On value, it really depends what price you get it at. At full RRP, I’d say it’s on the expensive side for what it is. On discount (which happens fairly often), it becomes more reasonable, especially compared to the higher iO models that mainly add colour screens and more app tricks. The iO6 hits a middle ground: solid cleaning, a few smart features, but not totally over the top.

The main hidden cost is replacement brush heads. The iO heads are more expensive than the standard Oral-B ones, and you can’t use the old style on this range. If you’re changing heads every three months like you’re supposed to, that adds up over a year. You do get three heads in the box, which is nice to start with, but after that you’ll feel the price difference compared to cheaper brushes.

In terms of what you actually get for your money, the cleaning performance and gum protection are the two big wins. If you’ve got dental issues, sensitive gums, or braces / crooked teeth, the extra cost is easier to justify because you genuinely get better, more consistent brushing. If your teeth and gums are fine and you’re not bothered about pressure sensors and apps, then a simpler, cheaper Oral-B might give you 80% of the result for a lot less money.

So I’d say the iO6 is good value only if: you buy it on offer, you actually care about better brushing habits, and you’re okay paying more for heads. If you just want an electric brush that vibrates and that’s it, there are cheaper options that will be “good enough”. This one is for people who are willing to pay a bit extra for guidance, comfort and slightly better results, but it’s not the budget choice.

Design-wise, the iO6 looks more modern than the older Oral-B models. The black colour is nice if you’re tired of white plastic everywhere in the bathroom. The finish is matte-ish, so fingerprints aren’t too obvious, and it doesn’t look cheap. It’s still clearly a plastic device, but at least it doesn’t scream “entry-level” like the basic Oral-B handles.

The handle is a bit chunkier and heavier than my old Sonicare and the cheaper Oral-B brushes I’ve had. Not insanely heavy, but you do notice it the first couple of uses. After a few days I stopped thinking about it. The grip is decent – no rubber ridges, but the shape is ergonomic enough that it doesn’t slip, even with wet hands. If you have small hands, you might find it a bit thick, but my partner with smaller hands got used to it pretty quickly.

The screen placement and buttons are straightforward. You’ve got the power button and a mode button below it. The screen is small but clear enough to see the mode icon and battery bar. It’s not in colour like the more expensive iO models, but frankly, for a toothbrush, black and white is fine. I don’t need a cinema screen to brush my teeth.

The light ring is actually one of the more useful design bits. You see it clearly in the mirror while brushing, so you instantly know if you’re pressing too hard. I’ve always been guilty of scrubbing like I’m cleaning a pan, so seeing it flash red was a good reminder to chill out. Overall, the design is practical and modern, not fancy for the sake of it. It looks decent sitting on the bathroom counter and is simple enough that anyone in the house can figure it out in a minute.

The battery life is where the iO6 is a bit underwhelming, especially if you’re coming from something like a Philips Sonicare that can easily last three to four weeks on a charge. With the iO6, brushing twice a day for two minutes, I was getting roughly 7–10 days before needing to recharge. That’s acceptable, but not impressive for a modern premium toothbrush.

The display shows a rough battery bar, and after each brushing session it tells you the percentage left, which helps a bit with planning. But you do have to think ahead: if you’re going away for more than a week, you’ll almost certainly need to bring the charger. The included travel case does not hold the charger, so you end up with two separate things in your bag. Not the end of the world, just slightly annoying for the price point.

I also noticed that using the app seems to reduce battery life. When I used it with Bluetooth and tracking for a few days straight, the charge dropped faster. Once I stopped playing with the app and used it purely as a standard electric brush, the battery life stabilised a bit closer to that 7–10 day range. Still, compared to other electric brushes I’ve owned, this is clearly on the short side.

Charging itself is slow. You put it on the 2‑pin stand and leave it for several hours; this is not a quick top-up situation. My approach now is simple: when it drops below around 20%, I just leave it on the stand overnight. If you’re someone who hates thinking about charging, or travels often without access to a shaver socket or adapter, this might annoy you. The brush performs well when it has power, but battery life is definitely the trade-off you make with this model.

In terms of comfort, this sits somewhere between a classic Oral-B and a Sonicare. The head is the usual Oral-B round shape, so it’s easy to get around the back teeth and along the gum line, especially if your teeth aren’t perfectly straight. The first couple of uses on Intense mode felt a bit rough on my gums, so I switched to Sensitive for a few days, then moved back to Daily Clean once things settled.

The micro-vibrations are quite noticeable at first. If you’re used to a manual brush, it feels like a lot is happening in your mouth. My partner found it borderline too strong the first day, but liked it by day three. The noise level is not quiet; it’s a typical Oral-B mechanical sound, a bit less rattly than older ones but still clearly not discreet. If you live in a small flat and brush at 6am, people will hear it.

What helps comfort a lot is the pressure sensor. I realised pretty fast that I’d been brushing way too hard with my manual brush. Every time the ring turned red, I eased up. After a week, my gums felt less sore, and I didn’t get that occasional bleeding I used to see. The different modes actually make sense: Super-Sensitive is very gentle if your gums are inflamed or after a dental treatment, while Intense is good if you’ve eaten something sticky or haven’t brushed for a bit (not ideal, but it happens).

Overall, once you find the right mode for you, the iO6 is comfortable enough for daily use twice a day. It’s not ultra-soft or ultra-quiet, but it doesn’t feel harsh once you stop pressing like crazy and let the brush do the work. If you have very sensitive gums, I’d say start on Super-Sensitive, keep an eye on the pressure ring, and give yourself a week to adjust.

On a day-to-day basis, the iO6 is simple to live with, once you’ve set it up. You pick a mode, press start, and it guides you with the 30-second pulses until you hit the two-minute mark. The motor power feels consistent – it doesn’t slow down halfway through brushing like cheap brushes sometimes do when the battery is low. The oscillation plus micro-vibration combo feels thorough without needing you to scrub.

The smart features are a mixed bag. The built-in display is genuinely useful: you can change mode without guessing, and after brushing it gives you a quick smiley face and shows how long you brushed. It’s a small thing, but it does make you more aware of your routine. The coloured pressure ring is also genuinely helpful, especially if you’ve been told you brush too hard.

The app, though, is more of a novelty than a daily tool for me. When you sync it, it tries to track coverage and show which zones you missed. It’s fairly accurate, but you have to stand there with your phone open every time you brush. I did it for a few days to check my habits, then stopped. Also, the app seems to eat into battery life, and I’d rather save that. If you’re into stats and streaks, you might like it. If you just want clean teeth, the built-in timer and ring are enough.

In practice, the iO6 performs best as a strong, guided electric brush with a couple of genuinely useful features and some optional extras that you can ignore. It doesn’t glitch, the modes actually feel different (Sensitive vs Intense is obvious), and it’s consistent from day to day. Just don’t buy it purely for the app – that’s more of a side bonus than a core reason to pick this model.

In the box you get the iO6 handle, a 2‑pin charging base (no 3‑pin adapter, so you’ll need a bathroom shaver socket or an adapter), three brush heads, and a basic travel case. No fancy charger case, no USB, nothing like that. The travel case is plastic and pretty standard – it protects the brush in a bag, but it’s not premium or clever. It does the job and that’s it.

The handle has a small black-and-white display that shows brushing mode, a little face after you finish, and a rough battery level. You switch modes with a single button: Daily Clean, Intense Clean, Sensitive, Super-Sensitive, and Whitening. In practice, I ended up using Daily Clean 90% of the time, Intense when I’d eaten something sticky, and Sensitive the first few days while my gums got used to it.

There’s also a light ring around the neck that changes colour depending on pressure: it goes red if you press too hard, another colour if you’re too light, and a “just right” colour when the pressure is okay. The timing is simple: it vibrates every 30 seconds to tell you to move to another quadrant, and stops at two minutes. You can ignore it and keep brushing, but it’s handy if, like me, you used to rush through brushing in 45 seconds.

The app is optional. I installed it out of curiosity. It tries to track where you’re brushing using AI and shows coverage. It’s fun the first few times, but honestly, brushing with your phone in hand is annoying. Also, it drains the battery faster. After a few days I stopped using the app and just relied on the built‑in timer and pressure sensor, which is more than enough for daily use.

This is where the iO6 justifies its existence. In terms of pure cleaning, it’s a clear step up from a manual brush and from the basic £30 Oral-B I had before. After the first proper two-minute session, my teeth felt smoother to the tongue, especially along the gum line and at the back. The feeling is similar to leaving the dentist after a scale and polish – not identical, but closer than anything I got with my old brush.

I have a couple of crooked teeth where plaque tends to stick and stain more easily. With my old brush, I had to manually go back over those areas and still never felt they were totally clean. With the iO6 on Daily Clean or Intense mode, those spots felt cleaner without me having to overthink it. The round head and the oscillating-rotating motion really help get around each tooth. I also noticed less gunk building up between teeth when flossing, which is a good sign.

My gums were a bit tender the first few days, which is normal when you go from manual to strong electric brushing. After a week, they actually looked less red and puffy, and I had less sensitivity on one tooth where I used to overbrush. The pressure sensor stopped me from scrubbing that area to death, and the Sensitive mode still cleaned it properly. So the whole “healthier gums in a week” claim isn’t total nonsense – it’s not magic, but I did see an improvement.

The Whitening mode is the one I’m more sceptical about. It feels slightly more pulsy and focused on the front teeth, but don’t expect your teeth to suddenly look like a whitening ad. What I did notice is that surface stains from coffee and tea don’t build up as fast, so my teeth look a bit brighter simply because there’s less plaque and staining. Overall, if what you care about most is brushing quality, the iO6 gets the job done very well. It doesn’t replace flossing or hygienist visits, but as a daily tool, it’s solid.