From the Store listing:
The BT Sport app for Windows 10 allows BT Sport subscribers to watch BT Sport 1, BT Sport 2, BT Sport Europe and BT Sport//ESPN live and on the go. The app, which is optimised for touchscreen devices, offers live coverage of BT Sport’s growing line-up of major events including Premier League, UEFA Champions League, UEFA Europa League, FA Cup, Aviva Premiership, European Rugby Champions Cup, SPL, Bundesliga, Serie A, WTA tennis, MotoGP and UFC.
- Don’t miss a moment of the action with live streaming of BT Sport 1, BT Sport 2, BT Sport Europe and BT Sport//ESPN
- Live streaming of every single match from the UEFA Champions League
- Live streaming of selected events that are not televised on the four TV channels
- Seven-day channel listings
The application itself is free, but of course, a valid BT Sport subscription and BT ID are needed to watch the live channels. It is possible to install and access the app on as many devices as you like, but users are restricted to two concurrent video streams per BT ID - which seems more than reasonable.