SQRL Login
SQRL Login is a free, open-source app for Android. An implementation for SQRL (Secure Quick Reliable Login). It has 119 GitHub stars and is released under the MIT license, and you can install it from F-Droid and Google Play.
github.com/kalaspuffar/secure-quick-reliable-login (opens in a new tab)
- Android
- Java
- Other
- Actively maintained
About SQRL Login
This app is an implementation for SQRL (Secure Quick Reliable Login) on Android. Before you begin using SQRL to login to websites, your SQRL private identity must be created. You only need one, probably for life, because it reveals NOTHING about you, and it's highly secure. It's just a very long (77-digit) random number. From then on, whenever you login with SQRL to a website, your private identity is used to generate another 77-digit number for that one website. Every website you visit sees you as a different number, yet every time you return to the same site, that site's unique number is regenerated. This allows you to be uniquely and permanently identified, yet completely anonymous.
Privacy and F-Droid
F-Droid builds SQRL Login 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.
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What is SQRL Login?
SQRL Login is a free, open-source app for Android. An implementation for SQRL (Secure Quick Reliable Login). It has 119 GitHub stars and is released under the MIT license, and you can install it from F-Droid and Google Play.
Is SQRL Login free and open source?
Yes. SQRL Login'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 SQRL Login?
You can install SQRL Login from F-Droid (package org.ea.sqrl) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: v1.7.1).
Is SQRL Login still maintained?
The repository's most recent commit was on Jul 23, 2026. Its F-Droid listing was last updated on Mar 11, 2021. appsgit only lists apps whose repository had a commit in the last six months.