What do you mean by you wont renew if you can download enough games? Once your sub ends you will lose access to every game you’ve downloaded through the service, even if they are installed on your console. Your license to play the game is tied to the subscription so once that ends you will have no games to play.
It was pretty recently that they updated mobile to include Ginger Island and all that content. The mobile port of Stardew is fantastic all around. Sure you can’t use mods (although you can on android if you put in some effort) but it is such a perfect game for touch screens. The only thing that can be a little difficult is the combat but they have an auto combat setting that works pretty well in my experience.