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StoneAge Messenger vs SimpleX Chat: catalog facts
StoneAge Messenger	SimpleX Chat
Free Free and open source under GPL-3.0-only.	Free Free and open source under the AGPL 3.0. The company is funded by investment and…
Android	Windows, macOS, Linux, Android, iOS, Command line
End-to-end encrypted messaging over user-provided storage Supports direct messages and private groups	No user identifier of any kind, so conversations cannot be correlated by account Double ratchet encryption with an additional layer for the relay servers
Requires an S3 bucket or an invite to someone else's No voice or video calls	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
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: AGPL-3.0
No account needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 21, 2026

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