Compare software

nospeak vs Kryfo: catalog facts
nospeak	Kryfo
Free Free and open source.	Free Free and open source under GPL-3.0; optional anonymous backing supports development.
Android	Android
No central server; uses Nostr relays End-to-end encrypted conversations	No phone number or email needed End-to-end encrypted chats and groups
Small project with a small user base Requires contacts who also use Nostr	Pre-alpha and not yet audited Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Not stated if an account is 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 8, 2026

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