This app is a companion tool for use with the SkyGuardTWX UAT ADS-B Transceiver. It allows wireless configuration of all required setup parameters such as N-Number, Transponder ICAO code, and Flight Plan/Squawk code. The app is capable of manually changing aircraft squawk codes as issued by ATC while in flight if you have the Vision-Pro model of the SkyGuardTWX UAT Transceiver. Version 2.0.7 and greater is capable of displaying realtime squawk code and pressure altitude as acquired from your Mode C Transponder as long as you have a Vision-Pro Plus Model of the SkyGuardTWX UAT Transceiver.