ChatSecure

Spec sheet

Product

ChatSecure is a free and open source encrypted chat client for iPhone.Read 11 Oct 2026 · chatsecure.org

Security

The site says ChatSecure uses XMPP with TLS certificate pinning, OTR, OMEMO, Tor, and SQLCipher to encrypt local conversation logs.Read 11 Oct 2026 · chatsecure.org

Support

The support page directs users to GitHub Issues, UserVoice, and an email address for iOS security reports.Read 11 Oct 2026 · chatsecure.org

Headquarters

Berkeley, California, United StatesRead 28 Sep 2026 · chatsecure.org

Accounts

Users can connect existing Google accounts, create accounts on public XMPP servers, or connect to their own server.Read 11 Oct 2026 · chatsecure.org

Android availability

The upstream ChatSecure Android version is no longer maintained; the FAQ recommends migrating to another app.Read 11 Oct 2026 · chatsecure.org

Distribution

ChatSecure is available on the Apple App Store for free.Read 11 Oct 2026 · chatsecure.org

Donations

The About page says donations for the iOS version are accepted through PayPal and Bitcoin.Read 11 Oct 2026 · chatsecure.org

Interoperability

ChatSecure works with other clients that support OMEMO or OTR and XMPP.Read 11 Oct 2026 · chatsecure.org

Messaging protocol

The app supports OTR and OMEMO encryption over XMPP.Read 11 Oct 2026 · chatsecure.org

Source code

The iOS app source code is available on GitHub, and the About page lists its license as GPLv3+.Read 11 Oct 2026 · chatsecure.org

Plans and prices

Every ChatSecure plan and price →

Where Specifiction places it

• Encrypted Messaging Apps#22 of 437.7
• Secure Messaging Apps#23 of 367.7