Our child's dentist recommended a sonic toothbrush. We got a Sonicare (no app required). It's one of the best things that's happened to his teeth. YMMV. I don'

Our child's dentist recommended a sonic toothbrush. We got a Sonicare (no app required). It's one of the best things that's happened to his teeth. YMMV. I don't deny that people often have ulterior motives but I think operating on the assumption that that's the only motive they can possibly have is harmful.