SQRL - Main

An implementation for SQRL (Secure Quick Reliable 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.

Since you never need to use an eMail address or a password, you never give a website your actual identity to protect. If the website's SQRL identities are ever stolen, not only would the stolen identities only be valid for that one website, but SQRL's cryptography prevents impersonation using stolen identities.

This is as good as it sounds. It's what we've been waiting for.


Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 0.10.1 (27) - Added on 2018-10-11

    This version requires Android 4.1 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 4.7 MiB PGP Signature

    • android.permission.CAMERA
    • android.permission.INTERNET