I’ve used FlightView Plus for the longest time. I cannot even remember when I got it. I think I paid a small one-time amount for the app way back when. Lately, it’s been a little hinky on the notifications. But, I blame that more on Apple’s ongoing “improvements” to Notifications on the iPhone. But until recently, rock solid and helpful. I also have FlightView free on the phone as well. But, never use it.