Recently we came across a new RTL-SDR app on the Google Play store called TXAdvance which appears to be designed for professional sound engineers working in TV/film/stage/music production industry. The app uses an RTL-SDR to display the RF spectrum, helping sound engineers manage the RF spectrum for all their wireless sound recording devices, ensuring there is no overlapping signals, interference or intermodulation from other transmitters that could corrupt audio.

More information about the app can be found on their website at www.compasseur.com and the app itself can be purchased from the Google Play Store.