The saves are stored in the following location on the pc
C:\Users\<UserLogin>\AppData\LocalLow\WegildDev\The Outcast Tribe
and for android
Android/data/com.WegildDev.TheOutcastTribe/files/0
The game will, most likely, always take the saves from the save location, so you don't really need to move those or anything. If you have an Android version, you might want to store em, cause sometimes an app reinstall will be in order.