Since you asked, I'll try to answer some, others will chime in as well I sure. Not trying to be a stickler but we can refine a few things even though you mostly have it right.
You use the Air Control app when you want to gain authorization to...
You must also follow the safety guidelines of a community based organization, and you must check the airspace you intend on flying in. If it is controlled airspace, then you must get approval through LAANC.