This one guy made a really popular Android Wear watch face that mimicked the Pixel lockscreen. It only cost a few bucks, and people loved it. Due to some personal things in his life, he had to sell the app to a new developer to make ends meet. The new developer then started charging something like $7/WEEK subscription for a watchface that he didn't even develop in the first place, and runs entirely locally on the device so it's not like he's maintaining any servers or anything.
Apps that shouldn't be Subscriptions
What is the most useless app that you have seen being given as a subscription?...