Searching for air traffic control App for Mode-S receiver? PP Friend is the one and only Android App for your Mode-S receiver and COAA PlanePlotter software, or Kinetic Avionics SBS-1 or SBS-3 with Basestation software. This App shows real time planes list with lot of infos (icao callsign, registration, flight number, geographical position, speed, altitude, course, vertical rate, type, country, route, operator, squawk etc. , based on data transmitted by plane ADS-B transponder and received by your Mode-S receiver) with country flags and plane sihlouettes or operator logo. Much fun with ADS-B and ACARS. Planespotting is now easy for any planespotter. Real time map is also available. A Mode-S receiver and PlanePlotter (or Basestation) software ARE ABSOLUTELY REQUIREDContinued use of GPS running in the background can dramatically decrease battery life. Video here: http://youtu. be/vYN7MQ60KYkand here: http://www.youtube.com/watch? v=lWqIgubnQK4If you build Mode-S receivers, I will be happy to add your receiver to the supported receivers, please contact me. As always, I will be happy to listen to your suggestions for adding features to the App.