Try reinstalling the game. Please remember to uninstall the previous version before proceeding.
Unfortunately, crashes without error do not provide enough information. The only options I have left are to try to download the game from another source, such as a public post on UniFans. Additionally, you can try deleting all saves in the folder Internal storage/Documents/RenPy_Saves using the file explorer on your phone. And try installing the previous version again to see if it still works. You can also do this using the free post on UniFans.