I don't have a smartphone or tablet, and I was thinking of buying a P3 and using it without one until I save up a bit more money. But is this possible? I'm asking because I recently saw a video that seemed to suggest that you need the Pilot app even to calibrate the compass and set RTH. I wouldn't risk launching a P3 without being certain that it could pick up enough satellites for reliable GPS, that the compass was calibrated, the RTH feature was working - in short, that I had all the possible safeguards against a flyaway. But is this possible without a smartphone or tablet? Thanks.