The app is stable and has never crashed on me. Loads and runs smoothly. Nice character illustrations and voices, nice music (wish there were more tracks though, hehe), nice ambience, and interesting game modes for the rooms. And there isn't really a scene investigation, it's all just finding stuff and you have a chance of finding the item needed to progress the story. I'm just constantly stuck at the match-three room, so this is a bummer for me. All in all, a satisfactory game.