I recently bought an oral-b toothbrush with the AI app thing, and it’s worked really well. Something about making the little dots disappear mean I’m now cleaning my teeth properly for 2m30s. Wish I’d had it a lot earlier and maybe I wouldn’t have so many fillings. (I swear this isn’t an ad, I bought it on prime day thinking I’d probably return it).

Also I doubt it’s AI, just doing something fairly basic with the accelerometer data