Mandolin Chords

I have no idea what I'm looking at. There are fingerings all over the fretboard. I'm a professional musician and I don't get how the app is organized.

I have been playing mandolin for years and found this app to be worthless. There are no instructions, and no chord diagrams. Every time you open the app, it asks if you wish to get the paid version, which looks identical to the free version. Total waste of time installing this app and then deleting it. Another mandolin app in the iTunes Store shows a person holding a Mandolin upside down. I mean what a joke.