Yeah, and don't let your picture be taken because a camera steals your soul
Why do you need "privacy" when you're on an XC flight? The whole point of a tracker is TO FIND YOU, duh. Turn on the tracker for the flight, turn it off when you land - simple. And "monthly charges" - WTF are you talking about - it's totally free. No ads either.
My god, I can't believe the level of primitive superstition on this, a hang gliding forum. Rest assured, you technology paranoiacs and strip club denizens hiding from your wives can deactivate both the app and the location function of your phone when the app is not actually in use.
But pull your hat down over your face and cover your license plate when you drive past all those thousands of road cams out there - Big Brother is watching YOU.
PS: You do realize that everyone who uses a cell phone is trackable through through the towers and every message you leave on this forum is traceable through your ISP, don't you?