There’s an Upload Sync option in the menu (under the pages numers of saves). Although I haven’t personally used it yet, the engine allows you to save your game to the cloud and load it from another device. Please note: do not load saves that aren’t yours, as this could expose you to malicious code. As long as you only load your own saves, you’ll have nothing to worry about, and you’ll easily be able to transfer saves between your phone, computer, or other devices. For more information, visit: https://sync.renpy.org/.