Y’know I never know when it comes to these patreon games - but are save games meant to be compatible with future versions? So like, theoretically you can do everything and then just update your APK/folder to see new stuff?
The game will reference the same save file in the same location so that's not an issue. Game updates can break saves if the way the save data is configured, but since this uses RPG maker MV it's quite static and shouldn't be an issue.