Telemetry Viewer APP
Hardware is required to connect! You additionally need to connect signal inverter to taranis R9M smart port and then connect bluetooth module to it. Bluetooth module should be configured to work at 57600 baud rate.
This application is open sourced. You can view source and report any issues at https://github.com/CrazyDude1994/android-taranis-smartport-telemetry