Hi, I made an app a few years ago. It's an helper for the Middle Earth RP, running on android and desktop.
It allows for skipping a lot of search through the books, pretty much every mechanism is included excepted the static actions and critics, and the treasure generator.
Dices are still necessary, I tested that and was able to play high with my family (as the game master).
Get the app on the playstore by entering MERP Assistant, or at https://github.com/e2002e/jrtm (look for the "releases" button) in case you want the desktop application ; if you don't have linux, then you'll have to follow the guideline on the readme to get the executable.
Note this is only translated to french / english.
All the best.
Yvain.