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Citrine

Citrine is a free, open-source social media client for Android. Nostr relay for Android. It has 136 GitHub stars and is released under the MIT license, and you can install it from F-Droid.

github.com/greenart7c3/Citrine (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)View on GitHub (opens in a new tab)

About Citrine

Citrine is a nostr relay for android. It allows any nostr client that supports Android to send and receive events from this application.

Privacy and F-Droid

F-Droid builds Citrine 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

  • Citrine screenshot 1
  • Citrine screenshot 2
  • Citrine screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Citrine FAQ

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Is Citrine free and open source?

Yes. Citrine's source code is public on GitHub under the MIT 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 Citrine?

You can install Citrine from F-Droid (package com.greenart7c3.citrine); the links are on this page. Its GitHub repository also publishes releases (latest: v3.2.0).

Is Citrine still maintained?

The repository's most recent commit was on Sep 18, 2026. Its F-Droid listing was last updated on Oct 6, 2026. appsgit only lists apps whose repository had a commit in the last six months.