First of all, thank you for playing! Regarding your problems, I don't really have an answer; the game was made with RPG maker so the Android version is a port. There is not much I can do about the performance, and I don't know why would it ask for camera and location... It shouldn't. Apologies for the inconveniences.
Edit: The option to save is not there deliberately. This is to avoid scum saving, as each playthrough should only last some minutes.