My P4 should arrive today, so with any luck with the weather, I'll be flying tomorrow or Saturday. I'm keeping my unboxed Mini 2 'virgin'....nothing is going on there app-wise except DJI Go and probably Litchi. But I'm wondering what other US-specific apps I might want to have on my phone. B4UFly (which I have heard sucks), Where2Fly? Not sure yet what all is out there and what is worth having handy. Thanks in advance!