I’ll refer you to unexpctedkeg’s comment

Because the cost of the app to do that isn’t $60 a year.

I’ve been looking for a breast pump recently - I’d like electric so I don’t have to manually pump. All of the ones I could find in the shop required an app to connect to the device. Why? What purpose does that serve me? I’d have to make an account, accept needless permissions and cookies and give them access to very personal data about my boobs and milk production - I went with a manual one instead

POV used correctly. Nice