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Syncthing-Fork vs SyncUp: catalog facts
Syncthing-Fork	SyncUp
Free Free and open source under the MPL-2.0 licence.	Free Free and open source under the MPL-2.0 licence.
Android	Android, iOS
Sync progress visible per folder and device Per-device and per-folder sync conditions	Same Syncthing client on iPhone and Android Peer-to-peer sync with no cloud server
Android only; other devices need their own Syncthing install More settings to learn than a simple cloud sync app	Early v0 pre-release Needs a second Syncthing device to be useful
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.