zautrix, you do DELIVER. Man, this is cool. Since you recompiled and fixed bugs in Ko/Pi, I have given up on all other calendering apps (tkc, Sharp etc) and just stuck to that. And what a happy camper I am.
Now with this addressbook, there goes the addressbook components (tkc) too to be replaced by Ka/Pi.
From the screenshots at least I can make out that this has far more varsatility and more details entry than the ones I use.
The one only little problem (and I am not pushing you here, since you have just started to work on it), any chance of it working with the damned Sharp email app to get contacts email addresses from in to the email address ? Thats the only reason I still keep the Sharp addressbook as well.
But anyways, its still will be too usefull even without that feature.
Kudos to you zautrix.