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Zerion

Zerion is a free, open-source messaging app for Android. Encrypted chats, calls and channels over Tor. It has 103 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid and Google Play.

github.com/zerionproject/Zerion (opens in a new tab)

Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error

Get it on F-Droid (opens in a new tab)Google Play (opens in a new tab)View on GitHub (opens in a new tab)

About Zerion

Zerion is a private messenger. Online messaging runs over Tor, so your IP address stays hidden from the people you talk to and from the Tor relays in between (your provider can see you use Tor). There's no phone number, no email, and no account on anyone's server. Your data lives encrypted on your own device; no Zerion server keeps a copy. One-to-one, group and mesh messages are end-to-end encrypted with hybrid post-quantum cryptography: today's proven algorithms together with the new NIST quantum-resistant ones. Channels and account transfer use Tor and classical cryptography. Keys move forward as you talk, so a key taken today cannot decrypt messages recorded earlier.

Privacy and F-Droid

F-Droid builds Zerion from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

No anti-features flagged on the latest F-Droid build.

Screenshots

  • Zerion screenshot 1
  • Zerion screenshot 2
  • Zerion screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Zerion FAQ

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Is Zerion free and open source?

Yes. Zerion's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.

How do I install Zerion?

You can install Zerion from F-Droid (package com.professor.zerion) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: v3.0.18).

Is Zerion still maintained?

The repository's most recent commit was on Oct 20, 2026. Its F-Droid listing was last updated on Oct 12, 2026. appsgit only lists apps whose repository had a commit in the last six months.