In the beginning, I loved this app when I first started using it. But, there are too many times when it doesnt sync with the toothbrush. I would always have to delete the app and re-install. I have done that about 4 times since I brought it last October. When it works, its great. I like the fact it Kees track of how often you brush, floss and rinse. If it worked consistently, I would give it 5 stars. But for now, I can only give it 2-3 stars!
Klgreen73 about Oral-B