why the hell would I want an electric toothbrush with a smartphone app

why the hell would I want an electric toothbrush with a smartphone app
would you like a smartphone app that comes with an electric toothbrush instead
literally my policy on most* household devices is “never buy anything with an app” because I want things that will last for a reasonably long time and an app is just limiting the useful life of the product
*I make an exception for Zigbee-based lighting, which is the only type of home automation I’m willing to tolerate
what does it do
I do not want a toothbrush that keeps track of toothbrushing stats
I do not want toothbrushing stats
and i love stats
Not a dang clue, I was looking at Consumer Reports electric toothbrush reviews and one of the checkboxes was "Has smartphone app".