Don't uninstall the older version. Just install the new version over it. That will keep your save file intact.
Alright thx, and let me say I don't why I enjoyed your game alot lmao, a couple months ago I was finding games to just goon too, and I thought I'd try this but I ended up playing hours on it just for fun lol, (lost my progress though broke my phone lol)
Though exporting a save file is a pain lol so I just decided to use a old phone that I know won't go anywhere lol