This exactly what I need, one mode and no need for their crappy app.
I bought the “Genius” Bluetooth, “smart” brush and about to toss it in the garbage because they “guide” you where and how long you’re brushing. Problem is, there’s one spot where it has trouble detecting and winds up prolonging my brush-time on that area which is not good either. Without the app the brush sends these annoying pulses for disconnection.