I think it has been pretty well established that magnetic cases/covers will not harm iPads. Everyone from Forum members to Apple has stated this. OK, that's that. But, do magnets effect apps that are running on an iPad? Particularly compasses and other directional apps. I could not find a definitive answer, so I conducted my own, non-scientific, non-binding and non-provable test. Here is what happened: 1. Went out into the middle of a baseball field (second base) where there were no metal structures, etc. 2. Verified "North" using two standard hiking type compasses. 3. Fired up the iPad Air 2 and tested three compass apps in the naked iPad after synchronizing the compass. 4. All three were within 2 degrees of the standard type compasses. North does not move! 5. Placed the iPad into a case with magnetic closure. and synchronized again. 6. Here's where it gets interesting. With the case cover hanging down, the compasses were slightly off by about three-five degrees. When I folded the case cover into the "reading" position (flat against the back of the iPad) the readings went to around 30 degrees off! Synchronizing did no good. 7. So, my unscientific study shows that if you are going to use a magnetic-close type case with iPad compass apps for navigation, and assuming you do not want to get lost, take it out of the case and synchronize it before use.