The main screen can display one of the 6 types of compasses available: Analog, Antique, Digital, GPS, Night and Simple Digital:
The background can also be customized. There are 5 options: none (black), Mesh, Steel, Sky and Wood.
Options like saving the current location or adding a note about it (using the Catch Notes app) can be added to the screen.
There are a lot of setting available that can affect the compass, location, compass appearance, places appearance, new notes, notifications and units (meter, foot etc).
All in all it looks great, works great, has a lot of options and it is free. However, unless you want to know exactly which way is north, the app doesn’t have any other use. And let’s be honest, why need a compass when you have access to apps like Google Maps?