Hi! I have tried your app few times and it feels quite good and responsive. Here are few ideas I have for simplifying the UI: - no need for exit -button: can be done via fullscreen (or power button etc). - no need for the x/y information - I really dont know why I would need to know, if my contact is the 23th of 234 or not? Makes a lot of noise to the UI. - search -bar to the bottom of the screen. This is more common way and works better when non-fullscreen mode. - change buttons to icons This way you can fit all the buttons in one line. Also in portrait mode.