card10 Companion

Tools

card10 Companion is an open-source (MIT) Android app. The APK we host is 3.7 MB, it needs Android 5.0 or newer, and it declares 10 permissions.

The file on this page is card10 Companion 0.9, 3.70 MB, and it installs on Android 5.0 and newer.

We compared the signing certificate of this build with the certificate recorded the first time de.ccc.events.badge.card10 entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.

The manifest inside the APK declares 10 permissions, including access to precise location. Android asks you to approve those the first time the app needs them.

Its licence is MIT. We took this build from F-Droid, and the source for this exact version is linked below.

The most recent release upstream is from Dec 28, 2021, over 4 years ago. It still installs; it is simply not being updated.

We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.

Download APK · 3.70 MB

Version: 0.9
Size: 3.70 MB
Requires Android: API 21
Package: de.ccc.events.badge.card10
Signature checked on: Sep 22, 2026
Where this file came from: F-Droid
Licence: MIT
Source code: Source for this version

File SHA-256: 6b0255c66feb01b5b79ff8f70deccd9fdd36383d24c10f985cc89cf72e050487

Signing certificate (SHA-256): c3f96fefd301177f295a1660b94d772c9600b84d8ecf6a63bf4bfb7867c4e106

We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.