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CalyxOS

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Your Phone Should Be Private

Everyone needs a phone. Not everyone wants to be spied on. Reclaim
your privacy with CalyxOS.

CalyxOS is an Android mobile operating system that puts privacy and
security into the hands of everyday users. Plus, proactive security
recommendations and automatic updates take the guesswork out of
keeping your personal data personal.

CalyxOS Features

Own Your Conversations

 Call, text, or video chat privately with Signal.

 Encrypted communication is prioritized and encouraged in the OS.

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Access the World's Information

 Browse the internet without censorship using Tor Browser.

 Free and trusted VPNs from The Calyx Institute and Riseup included.

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Download Your Favorite Apps

 Download all of your favorite apps from F-Droid and Aurora Store.

[?] microG replaces some functions of Google Play Services while
maintaining much more anonymity and privacy. Completely Optional.

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Learn More

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Install CalyxOS

Ready to make the move? Let's go 

Install CalyxOS
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About CalyxOS

Why did we create CalyxOS?

Learn More



Recent Research

User Personas

Maya Ninova, Ph.D., 2021

We recently conducted a diary study and a set of user interviews and
synthesized a baseline understanding of who our users are. Download
the research report!

Download PDF



Recent News

August Security update

2021-08-05

The August update is here. It's mostly identical to the Special Pixel
4a release (2.7.1), with the only addition being the security
updates.

Verifying CalyxOS builds

2021-08-04

The official CalyxOS builds are signed with our private keys.
Over-the-air (OTA) updates are also signed with the same keys, and
once you install the OS, only updates signed with the same key can be
installed.

Minor update for Pixel 4a

2021-07-21

A small update is now available for the Pixel 4a (sunfish). It mostly
contains bugfixes.

See more

Become a Member

CalyxOS is a collaborative open source applied research project
sponsored by the Calyx Institute, a 501(c)(3) non-profit dedicated to
making privacy and security available for all.

Join Now

This work is licensed under a CC BY-SA 4.0 license.

(c) 2021 Calyx Institute.

This website was last updated at 2021-08-06 22:55