Not bad, not great

Problems similar to others. Some planes go lost even though they appeared perfectly on course. On iPhone it can be tricky to draw perfect line to line up small runways. My sound stopped working around level 13 so now no audible cues when flights enter air space; cheering and music still work. For $.99, its not the biggest loss but not an amazing investment.

RedRiverBluesMan about ATC 4.0, v1.81