Save and continue
Save inside the game when it offers that option. A manual Relay state captures a moment in the emulated machine; Auto Resume helps you return after an interruption. Keep Relay open for sync to finish, then check the destination has the expected game and progress before continuing. States require compatible game content and emulator versions.
Two devices disagree? Relay keeps both saves and asks you. Nothing gets overwritten.
iCloud and Relay Sync
Your library, saves, and play history. Game-file sync is free and opt-in. It all lives in your private iCloud storage.
Keep your library, saves and play history together with a Relay Account. Relay Sync gives you 100 GB; Sync+ gives you 500 GB. Both include Relay Pro while your subscription is active. Game-file sync is your choice.
Staying with Apple? Your private iCloud sync remains free. Relay Sync is a separate, optional storage plan.
Relay for Android is coming. Relay Sync connects the Apple and Android ecosystems: when the Android app arrives, use the same Relay Account to carry your library and progress between them.
Free is a whole emulator.
Local play and iCloud sync need no Relay Account. Transfer from a computer needs Relay Pro and a Relay Account, but no Sync membership. The optional Relay Sync storage plans also need an account.
Relay Pro unlocks Mac gameplay, advanced play tools, and Transfer from a computer. Relay Sync and Relay Sync+ are separate online storage plans that include Pro while active. iCloud sync stays free.