Homebrew GBAsync - Full 3DS / Switch / Delta Rom Save Sync App

[drippyday]

Every once in a while, I get really into customizing my homebrew devices, and I think the latest Fire Red hype brought me back. I initially wanted something to just sync up my gba rom saves between my phone, 3ds and switch. The scope grew, and here we are! So far I've implemented:

• Switch and 3DS homebrew applications
• Customizable Delta / Dropbox sync with polling or manual sync
• Lightweight FastAPI Docker server using docker-compose as the server brain
• Web Admin UI for Desktop and Mobile for downloading, injecting and reverting to older saves
• Ability to "lock" a game so it doesn't get synced by Auto Sync
• Ability to "keep" any save file, so it doesn't get purged from history (and set how many prior saves you'd like to keep)
• Give display names to your roms and saves that syncs between all apps
• Can initiate uploads, downloads, and revert to old saves from any client or web page
• Conflict resolution so your saves are not overwritten if server and local diverged except when explicitly instructed
• Works for GBA, DS and GB/GBC saves

This has grown from "sync all my saves across all devices" to the ultimate save file management platform for .sav files. Share saves with your friends and directly inject them into all devices in one step. Give labels, archive favorite save states, set up personalized revision history!

Some limitations:

• Current only .sav is supported for Delta / Dropbox Sync, but other formats should work if you just need to move them. between devices and no conversion necessary.
• I expect it would work for other emulators, as long as they use .sav! Only really tested on my workflow, which is:
  
  • mGBA on Switch (for gba and gb/gbc)
  • open_agb_firm and Twilight Menu++ on 3DS (for gba, nds and gb/gbc)
  • Delta on iOS (for gba, ads and gb/gbc)

Any feedback or ideas for next step implementation would be great! Feel free to use or distribute within the terms of the provided license, and buy-me-a-coffee if you're feeling bold. Thanks!

https://github.com/drippyday/SaveSync

 

[shadowshow]

This looks superb! Integration with the RomM saves system (has a whole API now) on 3DS etc would be the cherry on top to make the whole thing effortless and interoperable with the wider scene.