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Möbius Sync vs Seafile: catalog facts
Möbius Sync	Seafile
Freemium Distributed through the App Store; check the store listing for current pricing.	Freemium The community edition is free and open source. The Professional edition is paid.
iOS	Windows, macOS, Linux, Android, iOS, Self-hosted
Brings Syncthing sync to iPhone and iPad Works with Syncthing on Windows, macOS, Linux and Android	Block-level sync and deduplication make it fast with large libraries Per-library client-side encryption, and a drive client that streams on demand
iOS only Third-party app, not part of the official Syncthing project	Some features are reserved for the paid Professional edition Self-hosting requires a database and careful upgrade handling
Downloadable app	Self-hosted, Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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