You might want to note that "Aviation Tools" requires permission to make phone calls without your intervention. Not that I don't trust the manufacturer, but I'm not letting any app onto my phone with that permission set. People fall upon hard times...
Apps can send a phone number to the phone for you to press "call" without this permission. The purpose is probably legit, for calling weather services or whatever, but if it keeps calling weather services abroad through a bug or intentionally, it'll get expensive on your phone bill.
Then there are pay calls. Remember those calls people were getting where one signal came through from a peculiar country code? Those who simply dialled back got no tone, no nothing. Some made several attempts to see who was calling. The calls something like €10 each. Someone in Nigeria was making a small fortune. Do we really want apps which are able to call out at will... ?