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SimpleX Chat vs Cwtch: catalog facts
SimpleX Chat	Cwtch
Free Free and open source under the AGPL 3.0. The company is funded by investment and…	Free The open-source application is available without a license fee.
Windows, macOS, Linux, Android, iOS, Command line	Windows, macOS, Linux, Android
No user identifier of any kind, so conversations cannot be correlated by account Double ratchet encryption with an additional layer for the relay servers	Designed specifically to resist metadata collection, not just message reading No account, phone number or email required
Connecting means exchanging a link or QR code in person or elsewhere No contact list means a lost device is a lost set of conversations unless backed up	Tor routing makes delivery slow and requires both parties online Small project with a limited feature set
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License not stated
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 21, 2026	Official website Full listing and sources Checked September 22, 2026

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