For Android: just update
For Windows: savedata in %appdata% folder, just install/unzip new version.
For Mac: i don't know
To be honest, i don't know what to say. Game and storyline are great themselves, has a lot of potential and plot twists. Characters has there unique charm. But a battle system is bit clunky, awkward. No possibility to use special move sets, sometimes characters attack not in right order, glitches. I know it's engines issues, it's not perfect for it (forgive me, MIGHTY Ren'Py), and i'm nobody to babble about it, but if the main feature of game is tactical battles (and nsfw of course) - Godot is better choice. But (too much but's) there is another solution - change battle system for comfort use in Ren'Py. Like The Banner Saga (chess battlefield), or Vambrace(side view).
It's only my option. I hope i helped you a little. Good luck with the project.
Great game so far. A good cast of characters. Curious cat Alice, tomboy dog Sarah, tender (milf) fox Katie, geek introvert rabbit Grace, naughty wolf Zoe, fashion rich girl Jessica, and of course big and kind bear Molly. Each with there unique charisma and story, problems and worries. If there is a chance for another heroine to be in cast. There is still missing someone. Someone to complete all cast. Some mean rough, but careful one, burned with toxic relationship. Some goth girl, i guess. Deer or raccoon.
It's just my thoughts, nothing more. I just want to say i like that game. It's calm my nerves in stressful time. Good luck in future.