If you are getting the Galaxy please consider getting the Galaxy tab Pro. The pro is only a bit more expensive. I had trouble with the standard tab on my phantom lightbridge as it would not orient the compass correctly. I downloaded the compass app to be told that the tab did not have a compass. I returned it to the shop and tested the tab pro in the shop itself with the compass app and hey presto it worked. This is my personal experience. The tab pro is a really nice tablet for the money - slim lightweight and good battery life. Screen is good too.
Android app has not caused me any issues. I use both Android and Ipad on a dual controller setup and they work well together. I have rooted the Android so I can record footage showing the telemetry etc..