Oral-B iO5 Electric Toothbrush Review: a smart brush that cleans well but isn’t perfect

I’ve been using the Oral-B iO5 for a bit over three weeks now, morning and night, after years with a basic Oral-B Pro model and sometimes just a manual brush when I was lazy. I bought it during a promo, because at full price I honestly hesitated. For a toothbrush, it feels expensive, and I wasn’t sure if the extra modes and the app would be anything more than a gimmick. I went in a bit skeptical, especially about all the AI and smart stuff they push in the description.

After a few days of use, what hit me first was the clean feeling on the teeth. Compared with my old electric brush, my teeth felt smoother, especially near the gums and between teeth. It’s not like going to the dentist, but it’s clearly a step up from a manual brush and also a bit better than my older cheaper Oral-B. I noticed that plaque builds up slower during the day, especially on the inside of the lower front teeth where I usually struggle.

On the other hand, it’s not perfect. The battery life is decent but not great. If you brush twice a day for two minutes, expect roughly a week and a bit, not “ages” like the marketing hints at. Also, the app is useful at the beginning, but you quickly realise you don’t want to stand there every day staring at your phone while brushing. After the first week, I mostly stopped using it except to check stats from time to time.

Overall, I’d say it’s a solid toothbrush with clear benefits over a manual brush, but it’s not some miracle object. It cleans well, it’s fairly comfortable, and the pressure sensor is actually helpful. Still, between the price of the handle and the cost of replacement heads, you really have to be sure you care about dental care enough to justify it. If you just want something basic and cheap, this will feel like overkill.

On value for money, this is where you have to be honest with yourself about what you really need. The iO5 clearly cleans better than a manual brush and feels nicer than cheap electrics, but the price is high, and that’s before you add the ongoing cost of replacement heads. The iO heads are more expensive than the regular Oral-B heads, so over a couple of years, the total cost adds up. If you’re on a tight budget, this is not the most rational choice, especially when cheaper Oral-B models already give you a big jump over manual brushing.

For me, I grabbed it during a discount, which made it feel more acceptable. At that price, I’d say it’s good but not mind-blowing value. You get: solid cleaning performance, multiple modes including good sensitive options, a pressure sensor that actually helps, a basic but useful display, and a travel case. You don’t get: super long battery life, extra heads in the box, or a very premium build. The app and AI are a nice bonus at the start but not something most people will use every day.

If you’re the type who goes to the dentist and always gets told you’re not brushing well enough, and you’re willing to spend more to fix that, then the iO5 can make sense as a long-term investment. It genuinely helps with technique and consistency. If you already use an older Oral-B electric and are happy with it, the jump to the iO5 is nice but not essential. The main upgrades are comfort, more consistent clean, and the smart feedback.

So overall, I’d rate the value as decent but not amazing. You’re paying a premium for extra comfort and smart features. If you catch it on sale and you care a lot about your teeth (or have dental issues you want to manage better), it’s easier to justify. If you just want an electric brush that spins and vibrates, there are cheaper models that will get the basic job done.

In terms of design, the black handle looks clean and modern, and it doesn’t scream “medical device” like some older electric brushes. It’s slim enough to hold comfortably, even with smaller hands, and the weight is balanced so it doesn’t feel top-heavy. I can grip it easily with wet hands without feeling like it’s going to slip, which is important when you’re half asleep in the morning. The surface is mostly smooth plastic with some slightly grippy areas, so it’s not luxurious, but it’s practical.

The LightRing around the top is actually more useful than I expected. It changes colour depending on how hard you press: red if you’re pressing too hard, white/blue-ish when you’re in the right zone, and another colour when you’re too soft. It sounds like a gimmick, but the first few days I realised I was brushing way too hard, especially on the back teeth. After a week, I’d adjusted my pressure and now I trigger the red light much less often. So the design here is not just for looks; it actually helps you fix a bad habit.

The small display is simple but okay. You don’t get a full-colour screen like on the more expensive iO models, but honestly, I don’t need animations on a toothbrush. The basic icons and smiley are enough to know which mode you’re on and if you’ve hit the 2 minutes. The only thing that feels a bit cheap is the overall plastic feel. For the price bracket, I expected something a bit more solid or rubberised. It doesn’t feel like it will break, but it’s clearly still just plastic.

One design annoyance: the charging base is small and light, so the brush stands upright but can be knocked over easily if you bump the sink or the cable. Not a huge problem, but in a cramped bathroom it’s a bit annoying. Also, the two-pin plug means if you don’t have a shaving socket, you’re relying on an adapter hanging off the wall, which isn’t the neatest look. Overall, the design is practical and easy to live with, but nothing here screams high-end luxury. It’s more “good appliance” than “premium gadget”.

The battery is one of the points where I’m a bit less impressed. Oral-B talks about a long-lasting battery, and yes, it lasts several days, but in real life it’s not as strong as I expected for the price. Brushing twice a day for the recommended 2 minutes, mostly on Daily Clean mode with the pressure sensor doing its thing, I get roughly 8–9 days before it really needs a charge. If I occasionally use Intense Clean, it seems to shave a day off that. So it’s fine for a week away, but not much more.

The charging itself is straightforward: you pop it on the small inductive base, and it takes a few hours to fully charge from low. The handle gives you a battery icon, but it’s not super precise. It goes from “seems fine” to “better charge soon” quite quickly. I learned the hard way when it died mid-brush on day 9 because I assumed I had one more day left. Since then, I’ve just made a habit of charging it once a week, usually on a Sunday, and that avoids surprises.

For travel, the battery is acceptable but not amazing. For a long weekend or a short work trip, you can probably skip the charger if you leave with it fully charged. For a full week’s holiday, I’d bring the charger just in case, especially if more than one person uses it or you do three brushes a day sometimes. The travel case doesn’t hold the charger, so you end up with two separate bits in your bag.

Compared with some other electric brushes I’ve used (including cheaper ones), I’d say the iO5’s battery life is average to slightly above average, but nothing special. It’s not a deal-breaker, but with all the talk about “long-lasting battery for travel”, I expected a bit more, like two full weeks. If you’re someone who hates charging things often, you might find this a bit annoying. If you’re fine plugging it in once a week, it’s manageable.

Comfort-wise, this is where I was the most cautious because I’ve got slightly sensitive gums and a couple of sensitive teeth. My previous cheaper Oral-B sometimes left my gums feeling a bit sore if I wasn’t careful. With the iO5, the first two days were a bit strange: the micro-vibrations feel different from the older oscillating models. It’s less of a rough mechanical feeling and more of a buzzing, especially on the front teeth. It took me 2–3 brushes to get used to it.

The good point is the different modes. Sensitive and Super-Sensitive modes are genuinely softer. When my gums felt a bit tender one evening (I’d eaten crisps and been a bit rough with floss), I switched to Super-Sensitive and it was gentle enough that I could still do the full 2 minutes without discomfort. On normal days, I use Daily Clean, and it’s firm but not painful. Intense Clean is, for me, a bit too much for everyday use; I only use it once every few days if I’ve eaten something sticky or feel like my teeth need a deeper session.

The pressure sensor helps with comfort too. I tend to press too hard with manual brushes, and even with electric ones. With this, as soon as the ring goes red, you feel a bit stupid and instinctively ease off. After a week, I noticed less bleeding when flossing, which for me suggests my gums are less irritated. So in daily use, the brush feels firm but under control, rather than harsh.

The only slight downside is the noise and vibration intensity. It’s not super loud, but it’s not quiet either. In a small bathroom late at night, you do hear it. And if you’re very sensitive to vibration in your hand, you might find a two-minute session a bit long at first. Personally, after a few days I didn’t notice it anymore, but it’s definitely stronger than a manual brush. Overall, for someone with normal to slightly sensitive gums, I’d say the comfort is pretty solid, as long as you actually use the softer modes when needed.

Daily performance is generally solid. The brush starts quickly, there’s no big delay, and switching between the 5 modes (Daily Clean, Intense, Sensitive, Super-Sensitive, Whitening) is done with a simple button press. I ended up mostly using two: Daily Clean for normal brushing and Sensitive when my gums felt a bit off. Intense is powerful but a bit too much for me every day; Whitening is okay but doesn’t feel massively different, and Super-Sensitive is handy if your mouth is sore for any reason.

The timer system is useful and not too intrusive. Every 30 seconds, the brush gives a slight change in vibration to tell you to switch zones, and at 2 minutes it changes again. You can keep brushing if you want, but at least you know you’ve hit the dentist-recommended time. This alone probably improves most people’s brushing quality, because we usually underbrush by quite a bit. I noticed I spend more time on the difficult spots, like behind the lower front teeth and the back molars.

Now, the AI and app part. It connects to the Oral-B app via Bluetooth. The first setup was easy enough: download app, create account, pair the brush. The app then tries to track in real time which zones you’re brushing (six zones). The first few times, it’s actually interesting; you see where you tend to skip or rush. For me, it clearly showed that I neglected the inside of the upper molars. After about a week of checking the app, I had corrected that habit. But honestly, after that, I stopped using the app daily. I don’t want my phone in the bathroom all the time, and standing there watching a screen while brushing isn’t very natural.

So in real life, I’d say the smart features are helpful for the first week or two to adjust your technique, but then they become a bit redundant. The pressure sensor and timer are the features that really matter day to day. The app is more of a coaching tool you use occasionally. Overall performance is good: consistent power, no weird glitches, and the brush feels reliable. Just don’t buy it only for the AI features, because you’ll probably get bored of those quickly.

When you open the box, the first impression is that they’ve tried to make it feel a bit “premium”, but in the end it’s still a plastic toothbrush with some accessories. Inside I got: the iO5 handle in black, one brush head, the 2-pin charging base (shaver socket style), and a plastic travel case. No adapter for a normal UK plug, so if you don’t have a shaver socket you’ll need a cheap adapter or a different charger. For the price, including an adapter would have been nice.

The travel case is practical but basic. It holds the handle and one head, that’s it. It’s light and does the job: keeps the brush from turning on in your bag and stops the head from getting covered in fluff or banging around. But don’t expect anything fancy like space for extra heads or a built-in charger. For short trips, it’s fine. For longer trips, you’ll end up throwing the charger in your bag too because of the battery life.

The handle itself looks pretty clean: one main button to turn it on/off, another to change modes, a ring around the top that lights up (pressure sensor and timer indicator), and a small black-and-white display that shows the mode and a smiley face when you’ve brushed long enough. The display is basic but useful. It doesn’t feel like a toy, but it’s not some high-end gadget either. Just simple, functional info.

Overall, in terms of presentation, I’d say it’s functional and tidy but nothing mind-blowing. You get what you need to start: brush, one head, charger, travel case. No extra heads in the box, which is a bit tight for the price. The packaging itself is standard cardboard and plastic inserts, not huge waste but not especially minimal either. It gives a decent first impression, but the value really comes from daily use, not from what you see when you first open it.

On effectiveness, this is where the iO5 actually justifies itself a bit. Compared with my old manual brush and even a basic Oral-B electric, my teeth feel noticeably smoother, especially along the gumline and on the inside surfaces. After the first full day (two brushes), I ran my tongue across my teeth and they felt closer to that “just left the hygienist” feeling. Not perfect, obviously, but you can feel less roughness. After about a week, I also noticed less plaque when I scraped with my fingernail (gross but real test).

The round head and micro-vibrations do a good job getting around each tooth. On the back molars, I can feel it wrapping around the tooth instead of just brushing one flat surface. I also think the built-in 2-minute timer and 30-second quadrant alerts help a lot with consistency. Before, I often rushed brushing, especially in the morning. Now I actually stay the full time and cover all areas properly. The app, when I used it the first week, clearly showed I was neglecting the inside of the lower teeth. After a few days of seeing that in the app, I fixed that habit and now I don’t really need to check anymore.

As for the whitening mode, don’t expect miracles. It doesn’t bleach your teeth; it just changes the brushing pattern slightly and maybe focuses a bit more on polishing. I did notice that surface stains from coffee seemed to show up a bit less quickly on the front teeth after about two weeks, but it’s subtle. If your teeth are properly stained, you’ll need whitening strips or a dentist, not just this mode. Still, for everyday stain control, it does a decent job.

In terms of gum health, I can’t scientifically measure it, but after about 10 days, my gums looked a bit less red in some spots and bled less during flossing. I think that’s down to better pressure control and more thorough cleaning rather than some magic feature. So overall, I’d say the iO5 is very effective for daily cleaning compared with manual brushing and a clear step up from basic electric models, but it’s not going to fix years of bad habits overnight.