Very good @holger80. I've heard about this. I need to investigate and learn more about it.
In attempting to do so, I found that your app does not allow me to sign in with Hive Keychain, as indicated. Instead, it takes me to a HiveSigner webpage and asking me for my keys, even though Hive Keychain is activated and working fine with PeakD ...
You have ported this app to Hive in a very short time frame. I would imagine you are still working on it, so hopefully this will be addressed soon enough. Then I will try it again ...
I also can't get Hive Keychain to work with it.