There are some "alternatives" for the Android and iOS platforms for the pc-based Stellarium, though I have no idea as to their suitability to the task you're after. It would be nice to have a tablet or fone that could take user input of user data, and plot location... it would be even better if the game could allow for that, wouldn't it?...
- maybe someday.
https://www.androidfreeware.net/down...tellarium.html