Loop YouTube videos, and control how long you want to play a YouTube video for.
FacePause - Look away to pause YouTube videos
Pzizz - Sleep at the push of a button! Now with "Focus"
mps-youtube - Terminal based YouTube player and downloader
Brain.fm - Music designed for the brain to enhance focus, relaxation, meditation, naps and sleep within 10 - 15 minutes of use.
ListenOnRepeat - 24/7 curated music streams
Sleep Watch - AI-powered, personalized insights about your sleep.