BandSight is an Android app for receive-only spectrum viewing, supported radio listening, scans, and local radio records. It works with compatible RTL-SDR USB receiver hardware.

Live reception requires a supported receiver, an antenna, and Android USB Host or OTG support. The phone alone is not the receiver. The app is free, with optional support; hardware compatibility and reception conditions determine available results.

Google Play: https://play.google.com/store/apps/details?id=com.autosecurelogin.bandsight