It’s ADSB Flight Tracker Lite , a very customizable app
It can directly connect to a dongle (with RTLSDR android driver), to a Virtual Radar Server or to dump1090/tar1090 with cutomizable url, but also to adsbexchange.com through an internet connection, you can simply switch between servers with one click.
You can also import your own boundaries (TMA, airspaces, airways, FIR…) with .txt files wrote with a pretty simple language