I think I still have mine set as default app. At least, when I turn on my controller the app auto starts. I am still not sure if my Nexus 7 tablet will be powerful enough to run the app. Went out this afternoon for an initial test flight, took drone up on an auto launch and it would slowly decent. Took it back up a bit more and it would still slowly decent. Did an auto land and it seemed to land pretty hard. Actually, it almost tipped. With my P3S, on autoland, it would come down pretty quick, then with about a foot left it would stop and go very slow. P4 did not do that. So, I took it all back inside, to go over settings. Sitting on the counter I got a Gimbal shake error along with some sensor errors. Rebooted everything and THEN is told me the controller needed a firmware update. Did that, rebooted and it acted much better. Going to try another test flight tomorrow weather permitting. Just going to go up and hover a while till I know everything is working well.