Oral-B iO9 Electric Toothbrush Review: a high-tech clean that’s great… if you don’t pay full price

I’ve been using the Oral-B iO9 for a few weeks now, after years with a basic Oral-B Pro model that cost a fraction of the price. I bought the iO9 during a discount because, honestly, I would never pay the full RRP for a toothbrush. I’m pretty into gadgets though, and my dentist has been on my case about brushing technique and gum health, so I figured I’d see if this thing actually makes a difference or if it’s just a flashy handle with an app.

First impression: it feels like going from a basic Nokia to a smartphone. The handle has a screen, it buzzes in different ways, there’s a light ring that changes colour depending on pressure, and the app tries to coach you like a personal trainer for your teeth. It’s a bit much at the start, but you get used to it quickly. After the first use, my teeth did feel smoother than with my old brush, especially along the gumline and behind the front teeth.

That said, it’s not perfect. The app is sometimes slow to recognise where you’re brushing, and the whole AI tracking thing can feel more gimmicky than useful on some days. Also, the brush heads are pricey and don’t last forever, so the cost doesn’t stop at the handle. You really have to be okay with ongoing spending here, not just the initial hit.

Overall, my early feeling is: it cleans really well and the pressure light genuinely helped me correct my brushing force, but the smart features are a mix of helpful and slightly annoying. If you’re expecting your life to change because of a toothbrush, calm down. But if you’re coming from a manual brush or a very old electric, you’ll probably notice a clear step up in how clean your mouth feels.

This is where things get real. The iO9 is not cheap, and at full retail it’s frankly hard to justify unless you’re very focused on dental care or you just like high-end gadgets. I bought it at a strong discount, and at that price it felt like a good deal for what you get: a powerful brush, three heads, a charging travel case, and all the smart features. But if I had paid the usual full price, I’d probably be a bit grumpy about it, especially once you factor in the ongoing cost of replacement heads.

Let’s break it down. You’re paying for a few key extras over a mid-range electric brush:

• More advanced motor with micro-vibrations
• AI position tracking and app guidance
• Pressure sensor with clear light feedback
• Colour display and multiple modes
• Charging travel case and extra heads included

On top of that, the iO-specific heads are pricey and “seem to need replacing often” as one reviewer mentioned. You’re not locked into a subscription, but the cost per head is noticeably higher than older Oral-B heads. Over a couple of years, that adds a decent chunk to the total cost of ownership. So even if you grab the handle in a sale, you’re still committing to more expensive consumables.

My honest take: at a good discount, the iO9 feels like a strong, feature-packed brush that justifies the price. At full RRP, I’d probably go for a cheaper iO model (like the iO6 or iO7) or a solid mid-range Oral-B and accept slightly fewer smart features. The cleaning performance is very good, but not so far ahead of cheaper electrics that it completely erases the price gap.

The iO9 in black looks more like a small tech device than a bathroom tool. The finish is matte-ish so it doesn’t scream fingerprints, and the overall shape is slim and easy to grip. On the front you have a power button, a mode button, and a small colour display that shows icons for modes, battery level, and a basic smiley/emoji-style feedback after you brush. The light ring around the top is the main visual cue while brushing: it goes green when pressure is good, red when you push too hard, and white/other colours depending on settings.

In the hand, the weight is slightly heavier than a cheap electric brush, but not ridiculous. I didn’t feel any wrist fatigue, even holding it at weird angles to get behind the molars. The handle feels solid and doesn’t creak or flex when you press the head against your teeth. The button placement is okay; I occasionally hit the mode button by mistake when I was adjusting my grip, but after a week I stopped doing that. The screen is small but bright enough to read quickly, even in a steamy bathroom.

The charging puck is magnetic, so the brush stands upright and clicks into place easily. It’s more stable than some older Oral-B chargers that felt wobbly. The travel case is rigid and feels decent in the hand, not premium luxury but good enough to throw in a bag without worrying. It can charge the handle if you connect it with the cable, which is handy if you travel a lot and don’t want the brush sitting loose in your wash bag.

Design-wise, my only gripes are practical ones: the glossy parts of the head holder and around the display pick up toothpaste splashes and need regular wiping if you care about looks. Also, the amount of visual feedback (lights, icons, etc.) can feel a bit much for something you use half-asleep in the morning. But from a purely physical standpoint, the design is pretty solid: it looks modern, doesn’t slip, and feels like it can handle daily use without falling apart.

Battery life is advertised as long-lasting, and in practice I’d call it decent to good, but not endless. Brushing twice a day for 2 minutes, I got around 10–12 days before I felt the need to recharge. That’s with Bluetooth on and using the app maybe half the time. If you skip the app and don’t mess around with modes too much, you might squeeze a bit more out of it, but don’t expect a month between charges like some sonic brushes claim.

The magnetic charging base is simple: you just stand the brush on it and it snaps into place. The brush stands solidly and doesn’t wobble, which is better than some older Oral-B chargers I’ve used. From low battery to full, you’re looking at a few hours, so it’s not instant, but not painfully slow either. The display shows a battery icon and percentage when you put it on the charger, so you know roughly where you’re at. The app also shows battery status if you care to check.

The travel case is a nice addition if you move around a lot. It holds the handle and two heads, and you can charge the handle inside the case using the included cable. That means you don’t need to bring the charging puck if you’re travelling with limited space. I took it on a weekend trip without the charger and had no issue; the battery easily covered those days. For longer trips, I’d still pack either the puck or the cable, just to be safe.

Overall, the battery is strong enough that you don’t have to obsess over charging every few days, but it’s not so long that you forget where you put the charger. Compared to cheaper Oral-B models, it’s an improvement in stability and consistency, but not a huge leap in total days. If you’re expecting some magic “charge once a month” situation, that’s not what you get here. It’s good, it’s reliable, and it fits into a normal routine without much hassle.

After a few weeks of daily use, the handle itself still looks and feels like new. No weird rattles, no looseness in the head connection, and the buttons haven’t gone mushy. The finish doesn’t seem to scratch easily, and toothpaste residue wipes off with a quick rinse and a cloth. The light ring and display both work as they did on day one. Obviously, I can’t judge multi-year durability yet, but nothing about it feels flimsy or rushed.

The main durability concern isn’t the handle, it’s the brush heads. The iO series uses specific heads that are more expensive than the standard Oral-B ones. In my case, after about 6–8 weeks, the bristles started to flare a bit and the blue indicator bristles faded, which is the usual sign to replace them. So you’re realistically looking at a replacement every 2–3 months if you want to stay on top of it. At the current prices, that adds up over a year, especially if more than one person is using iO heads in the household.

The travel case hinges and clips feel decent. I tossed it into a backpack with other stuff, and it didn’t pop open or crack. The head holder stand is basic plastic; it does the job but doesn’t feel particularly premium. It’s more about organisation than long-term robustness, but I don’t see it breaking unless you sit on it or drop something heavy on it. The charger cable and puck are standard quality – not thin or cheap, but also nothing fancy.

So from a durability angle: the core device seems well-built and likely to last several years if you don’t abuse it. The weak point for your wallet is the ongoing cost of the heads, not the risk of the handle dying early. If you’re okay committing to those refills, the physical longevity of the brush itself doesn’t worry me. If you’re trying to save money long-term, the refill pricing is something you really need to keep in mind.

The iO9 comes with seven brushing modes, which sounds great on paper but can also feel like overkill. The main ones I actually used were: Daily Clean (default), Intense Clean, Sensitive, and the Whitening mode. There’s also a tongue cleaning mode, which is short and less intense, plus a couple of others that most people will probably ignore after the first week. You switch modes using the button below the power button and see the icon on the display.

Daily Clean is the one I settled on for 90% of my brushing. It has a good balance of power and comfort, and it’s much quieter than my old Oral-B. Intense Clean is strong; it’s fine if you like a more aggressive feel or if you’re dealing with plaque buildup, but for everyday use it felt a bit too much for my gums. Sensitive mode is genuinely gentler, and I used it on days when my gums felt a bit tender or after eating something acidic. Whitening mode focuses more on the front teeth and changes the motion pattern slightly, but I didn’t see a massive cosmetic difference beyond the general cleanliness you get from any thorough brushing.

The 2-minute timer is broken into 30-second segments, and the brush gives a small pause/vibration to tell you to move to the next quadrant. This is pretty standard now, but the iO9 does it in a more subtle way than older models. With the app linked, you also get a visual countdown and a percentage coverage indicator, which is useful the first week or two when you’re trying to fix bad habits. After that, I mostly relied on the brush feedback and used the app occasionally to check trends.

In day-to-day performance, the brush is quiet, powerful, and consistent. It doesn’t feel like it’s losing strength as the battery drains, which is something I noticed on cheaper brushes. The only performance annoyance is the slight lag when switching modes and the occasional Bluetooth hiccup where the app doesn’t start a session automatically. It’s not a dealbreaker, but it reminds you that the “smart” part is still just software, and software can be a bit flaky sometimes.

Out of the box, the Oral-B iO9 package is pretty loaded. In mine I had: the iO9 handle in black, three brush heads, a charging puck with a 2-pin plug, a hard travel case that can charge the handle, and a little stand for holding the spare heads. So you’re not just getting a bare handle and one head, which helps a bit with the high price. The box itself is fairly compact but not tiny; it feels more like tech packaging than a typical bathroom product.

Setup is simple: you pop it on the charger, download the Oral-B app, and pair via Bluetooth. Pairing took me a couple of minutes and worked on the first try. The handle actually walks you through the basics on its tiny screen the first time you power it on. It’s not complicated, but there is a short learning curve just because there are several modes, icons and options instead of a single on/off button like older models.

In terms of first use, the brush comes partially charged, but I’d still give it a full charge before you start. The app asks you a few questions (how often you brush, what you want to improve, etc.) and then you’re pushed straight into the 2-minute guided routine. If you’re used to just brushing on autopilot, the constant feedback at the start can feel a bit naggy. After a few days, I stopped staring at the app every time and just followed the ring light and timer on the handle itself, which is more realistic for daily use.

My main takeaway from the presentation and first contact is: it clearly tries to feel like a premium gadget. It succeeds in that sense, but it also adds some complexity that not everyone will care about. If you just want something you turn on and forget, this is slightly overkill. If you like having data and guidance, the combination of the screen, modes, and app gives you plenty to play with.

This is the main point: does the iO9 actually clean better, or is it just fancy lights? Compared to my older basic Oral-B rotating brush, I noticed a difference after the first couple of days, mostly along the gumline and in the awkward spots behind my lower front teeth. The combination of oscillation and micro-vibrations feels more precise, and the brushing experience is smoother and quieter. My teeth feel genuinely smoother when I run my tongue over them after a 2-minute session, especially on the standard Daily Clean mode.

The pressure sensor is more useful than I expected. I always assumed I was brushing hard enough, and it turns out I was often brushing too lightly in some areas and too hard in others. The iO9 gives you real-time feedback: red ring if you’re pressing too much, a neutral colour if you’re under-doing it, and green when you’re in the sweet spot. After a week, I caught myself automatically adjusting pressure without thinking about it, which is probably the biggest long-term benefit of this brush for gum health.

The app’s AI position tracking is where things get a bit shaky. When it works, it’s cool: it shows a 3D mouth and highlights areas you’ve brushed enough. But it’s not always accurate. Sometimes it thinks you’re brushing the wrong quadrant, or it takes a second to catch up. I had a few sessions where it claimed I’d missed areas I’m sure I brushed. Over time, I stopped obsessing over getting 100% coverage in the app and just used it as a rough guide. It’s a nice extra, but not something I’d pay a big premium for on its own.

Overall, in terms of pure cleaning effectiveness, I’d say it’s clearly better than a manual brush and a noticeable upgrade over a cheap electric one. My mouth feels cleaner, and my gums were less sore after a week of using the pressure guidance. But the jump isn’t magical; it’s more like going from “good enough” to “consistently thorough” if you actually follow the guidance and don’t just treat it like a normal brush with a fancy screen.