Poor UI. Activates some kind of immersive mode without asking the user's permission or explaining to the user what's going on — and then stops you from switching apps. Doesn't let your keyboard paste an email address. Asks for a login but god knows where the "create account" / "sign up" option is. Also sucks up a lot of data, RAM, and disk space (at least 300 MB). All for a simple game that you can play on a dozen alternative apps. Uninstalled, goodbye.