Hey HN, we’ve been building AT Player since 2016. It’s a free Android music app (no logins) that started as a way to make YouTube more useful - playlist import, real PiP, Apple Music sync, etc. Recently, we added Multi-View: two YouTube videos at once, with both continuing in Picture-in-Picture when you leave the app. Use cases: tutorial + background music, podcast + gameplay, fitness vid + your mix. We’re giving out 500 lifetime premium codes (pinned in the YT comments). Feedback/questions welcome. Google Play: https://play.google.com/store/apps/details?id=com.atpc YT Demo: https://www.youtube.com/watch?v=S8bFFlZDaQQ Details: https://www.atplayer.com/multi-view.html