3 stars. Don't know if its interference, my iPad, or what, but just closing and relaunching the app multiple times without moving the device an inch will result in a slightly different degree angle and number each time. Gives a general idea which way north is but surely wouldn't use this for anything important.Example:Without moving the device at all, closing and relaunching the app 5 times gives me:359, 358, 360, 358, 1Also needs a manual recalibration button because now it is way off, although shaking the device seems to bring it back to its senses.

The graphics are undoubtedly beautiful, but I'm unsure about the accuracy. I placed first an iPhone 4 (with its built-in compass app) and my iPad 2 (with this app) in the same place in one room (one at a time so as not to cause interference). The readings seemed to differ by about 6° (phone would read 355°/8°, pad would read 350°/2°) in either mode (magnetic/true). But that may be because the *iPhone*'s app is inaccurate. I can't tell. In any case it would definitely appear to be in the general vicinity of the exact direction.

The compass does not move at all, no matter where I take it, how hard I shake it, or how many times I force close and open it. There is no difference between magnetic and geographic North because the image doesn't do anything. It's a photograph, not a movie, and certainly not a compass. There is neither latitude nor longitude written anywhere on this photo. If everyone reviewing this app had my experience with it, it would have solid 1 star ratings; I get that, but that doesn't alter the fact that for my new iPad Air 2, this app is taking up space and giving absolutely nothing back.Is it a bug? I don't know. It just doesn't work,...at all!

I deleted my other paid compass apps after I downloaded this one. The others just had too much information, more than I wanted. I needed a simple, easy to understand compass and this one fits my need perfectly.