You can safely delete older versions without losing your save files, because your save files are located somewhere else on desktop.
(Uninstalling on Android will remove your save files though.)
where are located the save files?
If you're on Windows, it should be in:
C:\Users\<User>\AppData\Roaming\RenPy\pervader
If you're on Mac, it should be in:
Users/<User>/Library/RenPy/pervader
ty
You can change the save file name in android and then safely delete the game without losing the save file.... Install the new one and change the save file back into its original name
