Officially: NO – the Peloton treadmill’s touchscreen is locked to the Peloton ecosystem. You cannot install third-party apps like YouTube, Netflix, or Spotify directly on the screen.
Unofficially (hacks): Some users have found workarounds:

• “Just Run” mode + casting your phone/tablet to a nearby TV.

• Web browser trick (older models) – but Peloton frequently patches this.

• Side-loading apps – not recommended and voids your warranty.