With Tubecasts App, you can play your favorite YouTube playlists and videos in AUDIO ONLY energy efficiency mode. The lifetime of your devices screen could be saved drastically.
You can save YouTube video streams to your album to play offline without worrying about cell data plan and signal quality on the road.
Access https://drwjf.github.io/tcp/ to try freely the basic playback feature by App Clip - even before installing the full app.