I bought an iOS 7 toothbrush about 7 months ago. It has already stopped working. Poor quality?? I’m not sure, but I do know that I spent a lot of money for something that did not last.

Received as a gift and couldn't be happier. I call it the "Cadilliac of tooth brushes". I love the blue tooth tutorial and other amenities. A 5-star tooth brush indeed.

Never in my life did I think a toothbrush would be a game changer. This thing is the ultimate clean, I’m not sure how I made it 32 years without it. I’ve had it for a month now, hopefully it holds up, because the price tag is large.

I like the toothbrush but this is my 3rd one. They seem to stop working about 5 months in. Not sure what I'm doing wrong. 🤔 I just ordered another one.

I have been using the iO for a week instead of Sonicare Diamond Clean: the iO has a more refined display, better Bluetooth connectivity, and better cleanings

I get great results using this toothbrush as directed. I am pretty upset that for the amount of money I put out, there is no travel charger. I guess its back to manual brushing for my next long trip.

Splurged on this brush after getting several recommendations from my friends and WOW it’s worth it. Feels like I just left the dentist’s office. The app works well and is very engaging. Really recommend this to anyone, it’s worth it!

Provides very thorough cleaning. My only concern is lack of accessories. The less expensive model, the iO-7 comes with brush head holders, how come the top of the line model, the iO-9 does not?

I purchased my toothbrush three months ago and over time, I’ve noticed a significant change in the appearance and feel of my teeth. Definitely worth the investment.

I bought this to replace a competitor's model, and it seems to do a much better job of cleaning teeth and removing plaque. On the downside the app gets confused as to where I am brushing. I see no evidence it monitors 16 zones. More like 6.