This app was mentioned in 2 comments, with an average of 1.00 upvote
So if you know Ketchapp on Android you'll know that they generally make endless games that can suck you in with minimal gameplay, just for the in-app purchase money.
But this game is actually good, because of the relaxing music, and minimal interface. It isn't too fast-paced, and it's not random, meaning only a set few levels are recycled for the endless run. Give it a shot!