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ChronoSync vs rsync: catalog facts
ChronoSync	rsync
Paid $49.99 with a 15-day trial; a cheaper Express edition is on the App Store and Setapp.	Free Free and open source under the GPL.
macOS	Windows, macOS, Linux, Command line
Syncs to drives, NAS, other Macs and selected cloud services Can create bootable backups	Transfers only the changed parts of files, so repeat syncs are fast Preserves permissions, links and attributes, which makes it safe for system trees
macOS only Paid license, with ChronoAgent sold separately	No versioning or snapshots on its own; --delete destroys without warning Command-line only, with a long list of subtle flags
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	Not stated if an account is needed
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.