You can find the repositories for the apps here:

Please join the channel

Android / F-Droid nightly

The GitLab delivere a (unsafe) Android Debug Build of Companion App by a F-Droid repository. If you are able to create debug logs and create Issues feel free to subscribe this repository.

iOS Testflight builds

⚠️ Please note ⚠️ We’ve got a lot of trouble pairing with the card10. If your want to connect to the card10:

  • checkout the ios-workarounds branch of the firmware repository
  • rebase the branch on the current firmware master
  • build a firmware image
  • flash that image on the card10
  • The ios-workarounds branch basically exposes all characteristics publicly, so everybody can connect to your card10 and read / write characteristic, so this is clearly only a development helper and not ment for day-to-day usage


  • Use this file and transfer it as card10.bin over USB to your card10