Glad to see it's working out better this way. I have only done Dirac Live calibration via Mac/PC, so I don't really have any experience with the App-based calibration, but I am not surprised you are getting better results. Something you might be interested in investigating on down the road is adding the optional Bass Control module, particularly if you choose to add a 2nd subwoofer. It will allow you to make very fine-grained adjustments to the crossover frequency per speaker group (down to 1 Hz increments) and my experience in a multi-sub configuration is that it does a very good job of creating an even bass response across the room.
Thanks again! My room doesn't have room for two subs. I'll just stick with the basic DL.