Hi!
1. On Windows, Linux and MacOS they should just work on the new version, unpacked in separate directory.
2. On the Android, if the game don't want to update itself and old version need to be removed, then you need to backup your saves. They may be found at directory Android/data/games.manka.tameit/files/saves
P.S. Saves stored at:
1. Windows: game\saves directory in the game itself. C:\Users\<your_user>\AppData\Roaming\RenPy\tameit-1591221220
2. Linux: ~/.renpy/tameit-1591221220
3. MacOS: ~/Library/RenPy/tameit-1591221220
4. Android: Android/data/games.manka.tameit/files/saves