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Delta Chat

Delta Chat is a free, open-source messaging app for Android. Decentralized private messenger with chat-shared tools and games. It has 1,850 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid and Google Play.

github.com/deltachat/deltachat-android (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 Delta Chat

Delta Chat is a reliable decentralized instant messenger that is easy and fun to use for friends, family, groups and organizations. Delta Chat is developed by a dedicated FOSS contributor community that jointly releases refinements and new features several times a year, across many stores and platforms world-wide. Features at a glance: • Private. Instant on-boarding without a phone number or other private data. • Friends & Family: Only chat with people you know. Unknown users cannot message or follow you without mutual consent. • Flexible. Supports multiple chat profiles and is easy to setup on multiple devices. • Extensible.

Privacy and F-Droid

F-Droid builds Delta Chat 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

  • Delta Chat screenshot 1
  • Delta Chat screenshot 2
  • Delta Chat screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Delta Chat FAQ

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Is Delta Chat free and open source?

Yes. Delta Chat's source code is public on GitHub under the GPL-3.0-or-later 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 Delta Chat?

You can install Delta Chat from F-Droid (package com.b44t.messenger) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: v2.64.0).

Is Delta Chat still maintained?

The repository's most recent commit was on Oct 27, 2026. Its F-Droid listing was last updated on Sep 28, 2026. appsgit only lists apps whose repository had a commit in the last six months.