NewPipe

What it is

An Android app that plays videos and audio from YouTube, PeerTube, SoundCloud, Bandcamp and media.ccc.de without an account or Google Play Services. It supports background audio, a floating popup player, downloads, local playlists, and channel subscriptions with new-video notifications. People who want to follow channels privately, or who run de-Googled phones and custom ROMs, use it in place of the official apps.