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Conversations vs Psi: catalog facts
Conversations	Psi
Freemium Free and open source. The Google Play build is a paid way to support development.	Free Free and open source under the GNU General Public License.
Android	Windows, macOS, Linux
Federated protocol, so you choose or run the server OMEMO encryption with a mature, well-reviewed implementation	OMEMO, OTR and OpenPGP encryption via plugins Very flexible interface with multi-window and all-in-one modes
Feature availability depends on what the chosen server supports Paid on Google Play, though free builds exist on F-Droid	Last tagged release dates from 2020 Aimed at experienced users rather than newcomers
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL
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 22, 2026	Official website Full listing and sources Checked September 24, 2026

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