Sync your Stardew Valley saves across Windows, macOS, Linux and Android — using your own Google Drive.
No third-party servers. No subscriptions. No tracking. Your saves never leave your own Google account.
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Important
ValleySave is in early access. The Google sign-in screen is still pending Google's verification, so only allow-listed Google accounts can connect for now. To get access, email lhirieo@gmail.com with the Google account (email address) you'll use with ValleySave. It opens to everyone once Google's verification is complete.
Stardew Valley has no official cloud save sync between PC and mobile. ValleySave fills that gap: it detects your farms, uploads them to a ValleySave/ folder in your own Google Drive, and lets you download and continue playing on any other device — Windows, macOS, Linux or Android.
- 🔒 Privacy-first — uses Google's restricted
drive.filescope: the app can only see files it created itself, never the rest of your Drive. - 🖥️ Truly cross-platform — one codebase (Flutter), native builds for all four platforms.
- 🌍 14 languages — English, Spanish, Basque, French, German, Italian, Portuguese, Russian, Ukrainian, Japanese, Korean, Chinese (Simplified & Traditional) and Thai.
- Automatic farm detection — finds your Stardew Valley saves on every platform, including Steam (native, Flatpak and Snap on Linux) and the protected
Android/datafolder on Android (root, Shizuku or manual-bridge modes). - Upload / download with one click — per-farm cards show which side is ahead (local vs Drive) and recommend the right action.
- Incomplete-save protection — a save that is missing files in Drive is flagged and can't be downloaded half-broken.
- Transactional replace — every download, import and restore uses a prepare → validate → backup → swap → verify pipeline with automatic rollback. If your PC crashes mid-download, your original save is untouched or automatically restored. Never a half-written farm.
- Atomic uploads — uploads go to a new immutable "generation" folder and are published with a single final manifest update. Other devices never see a half-uploaded save.
- Automatic backups with retention — a verified backup is created before any save is replaced; the app keeps the last 5 automatic backups per farm (manual backups are never deleted).
- Crash recovery — leftover temp folders from an interrupted operation are detected and safely resolved on next launch, always preferring the valid copy.
- Host migration — transfer the host role of a co-op farm to another player in the save file, with full integrity validation before and after the swap. Play the same farm even when the usual host is away.
- Share farms with friends — share a farm through Drive so other players can download it and keep playing, with role badges (read-only vs sync).
- Player-aware cards — co-op farms show every farmhand, not just the host.
- Launch the game from the app — detects and starts Stardew Valley on Windows, macOS and Linux (Steam native / Flatpak / Snap).
- Import saves from .zip — with the same transactional safety as downloads.
- Built-in updater — checks GitHub Releases and downloads the new version for you.
- Seasonal UI — the whole interface follows the in-game season: spring petals, summer fireflies, autumn leaves, winter snow.
Grab the latest version from Releases:
| Platform | File | Notes |
|---|---|---|
| Windows | ValleySave-Setup-*.exe |
Installer — includes VC++ runtime, 14 languages |
| Windows (portable) | ValleySave-*-windows.zip |
Unzip & run |
| macOS | valleysave-macos.zip |
Unzip, move to Applications |
| Linux (Ubuntu/Debian) | valleysave_*_amd64.deb |
Double-click to install — menu icon included |
| Linux (portable) | valleysave-linux-x64.tar.gz |
Extract & run, any distro |
| Android | ValleySave-*.apk |
Android 8+ |
- Connect — link your own Google account (OAuth,
drive.filescope only). - Detect — ValleySave finds your Stardew Valley farms automatically.
- Sync — upload farms to a
ValleySave/folder in your Drive. - Continue anywhere — install ValleySave on another device, connect the same account, download and play.
Does Stardew Valley have official cloud saves between PC and mobile? No — saves on PC and mobile are stored locally and there is no official cross-platform sync. ValleySave provides it using your own Google Drive.
Is my save data safe? Every destructive operation is transactional: your original save is backed up and verified before being replaced, and automatically restored if anything fails. Corrupt or incomplete data is rejected before it can overwrite a good save.
Where are my saves stored?
In a ValleySave/ folder inside your own Google Drive. There is no ValleySave server. The app uses the restricted drive.file scope, so it can't read anything else in your Drive.
Can I move a farm between Windows and Android? Yes — that's the core use case. Also macOS and Linux, in any direction.
Can we keep playing our co-op farm when the host is away? Yes. ValleySave can transfer the host role to another player (host migration) and share the farm through Drive.
Requirements: Flutter ≥ 3.12 · Android Studio (for Android builds)
git clone https://github.com/hirieo/valleysave-app.git
cd valleysave-app
flutter pub get
cp .env.example .env
# Desktop: fill GOOGLE_CLIENT_ID and GOOGLE_CLIENT_SECRET in .env
flutter runAndroid needs its own Google Cloud credentials (google-services.json).
- Bugs that affect core functionality: open an issue.
- Pull requests are welcome — the code is source-available under Polyform Noncommercial.
Polyform Noncommercial 1.0.0 — you may read, learn from and contribute to the code; commercial use requires explicit permission.
Distributed in the hope that it will be useful, without any warranty. Use at your own risk.
Sister repo: valleysave-web — landing page & web presence.