It is very useful and the app helps a lot! The button for turning the device on and off is a bit faulty. Sometimes, to turn it on, I need to connect it to the charger, even though it has battery.

The battery drops a maximum of 7% with each brushing. So it lasts for several days. The guidance from the app and the programs is excellent. However, I did not find much difference in cleaning compared to the cheaper version.

Very good in use, it has 3 functions: daily cleaning, sensitive teeth, and whitening. Additionally, it has an app you can download. The battery drains very quickly; for 2.5 minutes of brushing, it drops 15%. If you brush your teeth 3 times a day, it definitely needs daily charging.

I've had it for three months! Perfect in everything! Cleaning, battery life, notifications! It's worth the money

The packaging was open, the toothbrush was defective and not synchronized with the app. Additionally, its price is quite high given that there are much better models for 20-30€ less

I've had it for about ten days now and I really like it! Compared to the previous one I had (more expensive, I had the Philips), it cleans the teeth very well, and the programs it has are quite sufficient. I believe the app helps and is useful. The downside for me, compared to the Philips, is that it makes more noise, it doesn't turn off by itself after 2 minutes, and I don't think the battery lasts more than 7 days if you brush your teeth 2-3 times a day (2 minutes)

Very good toothbrush. The negative is the app where sometimes it can't understand which quadrant you are in

The product was purchased for 47 euros on a store promotion. It cleans well, the application is interesting, and the battery lasts a long time (3 brushings a day, it lasts 2-2.5 weeks). A good purchase for around 50 euros, anything more is debatable in terms of value.

A significant upgrade from all previous models.
Cleans exceptionally well with less noise even at the highest setting.

The new design of the heads and brush achieves zero residue from toothpaste and water (salts) at their junction.

The carrying case, at least for the io5, is lightweight but does not accommodate hosting a head. The heads are stored in a separate case included in the packaging.

The ergonomics of the button that controls the program could be better, but this may vary from palm to palm.

The io series offers significant innovations at a very good price.

I consider this specific toothbrush the ideal model of the iO series as it has the functions that the average person will need in their daily life. It does an amazing job that you can feel in your mouth and the dentist can see it too.

Nobody talks about it, but this toothbrush is unhealthy for your gums. The movements are too strong and cause your gums to recede, exposing the tooth root, which may lead to increasing tooth sensitivity and more serious problems. Dentists do not recommend electric toothbrushes. And, yet, here in the comments section, nobody has mentioned it.

I wonder why I hadn't gotten an electric toothbrush all these years. I would have saved myself from so many root canals due to poor brushing. It's nothing like the manual one where you had to apply pressure and brush for at least 5-6 minutes to feel clean.

If you exclude that if more than one person uses it, there is a difficulty in distinguishing whose brush is whose (the simple ones have colored rings), it is very good, almost silent (very good if you brush your teeth late at night), very good at cleaning teeth. I will come back in a few months when I have used it to see the battery life as well.

Transition from a conventional toothbrush to an electric one... The difference is truly enormous! It cleans much better, although it needs to be charged for 12 hours, it lasts for one week with brushing twice a day. The app is useful as it guides you quite well, although there are times when it doesn't immediately recognize the starting tooth. The only downside is that it is bulkier compared to a regular toothbrush for someone who travels frequently

It is the third Oral-B that I buy and it is superior to the previous ones. It cleans deeply and the app really helps in effective cleaning. However, the battery lasts less since it is connected to Bluetooth.

I had never used an electric toothbrush before, but I have to say that it was definitely worth the money. There is no comparison to how well I clean my teeth now.
One positive aspect is the companion app that guides you through brushing.
It needs to be charged every 5 days or so (with 2-3 three-minute uses per day). I think it could last longer, but it's not a major issue.

Next-generation toothbrush, brushing teeth easier and more efficient than ever. It is definitely worth it, especially compared to the Series 7, which is twice the price. The most important thing that is missing is the 3-hour charging time. This one lasts for 2 weeks with a 16-hour charge and approximately 3 minutes of use each time, about 6 minutes daily. The body of the toothbrush is made of black matte material that does not hold salt. The previous one was ruined by salt. It does not have the hello and goodnight feature of the Series 7, but it notifies you by flashing lights every time it senses you are close. The replacement brushes in black color, gentle care, are hard to find, but with the ultimate cleaning ones, there is no problem, although you can't find them in supermarkets either.

Very good and useful
We use it with two people with other accessories
Convenient for transportation with the travel case

The toothbrush is quite good and worth its money. It is quite powerful and the app works well. I don't think anyone needs to buy the more expensive models unless they are gadget enthusiasts. My comparison is based on a model I bought 3 years ago for 40 euros.