These types of games aren't designed to be played on mobile devices. Don't blame the game for that; try playing it on a suitable device instead. And if you don't have access to one or the "required privacy" to play it, don't criticize the game, criticize yourself. I don't mean to offend you, I just want you to realize that comments like this: 1. Don't help the game's development because they aren't constructive criticism. 2. Don't encourage more people to try it. YOU had a bad experience playing it on a mobile device. It's likely that you're having problems playing it on mobile because of the Ren'Py plugin for phones, which is common and not unique to this game (Harem Hotel is another game that runs terribly on mobile devices, precisely because of the plugin).
Sincerely, A random player.