itch.io

I'm using android and RTF is still on going. If there's an update, will I have to delete and download the game again, or will it update itself or can update through downloads? I don't wanna lose my progress

I'm using android and Shelter is still on going. If there's an update, will I have to delete and download the game again, or will it update itself or can update through downloads? I don't wanna lose my progress

Where can I give ratings, I'll give 5 (sorry, I'm kinda new)

Is there any exclusive interactions that needs to be paid? Or is everything completely free?