Sorry, I didn't get notified of this comment. The game has a feature called Renpy Sync. You can find it in the Save/Load screens, and it does allow transfer between types of devices. You just sync at the save screen, note the code it gives you, and then you can pull the saves onto a second device by giving the code to the load screen. It holds the saves for a few days, I believe, so it's not like a permanent cloud storage, but it works quite well.