NewPipe

NewPipe is a free and open-source Android app that supports YouTube, SoundCloud, media.ccc.de, Bandcamp, and PeerTube.

Key Features:

• Subscription list and playlists stored locally on your Android device
• No Google Services Framework required
• Background playback
• Download videos and audio
• No ads or tracking
• Picture-in-picture mode
• Support for multiple platforms beyond YouTube

Platform: Android only (available through F-Droid)

Supported Services: YouTube, SoundCloud, Bandcamp, PeerTube, and media.ccc.de.