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SmartTube — an Open-Source Alternative to the Official YouTube App on Android TV (Security Update Included)
(sh.itjust.works)
SmartTube is a free and open-source YouTube client for Android TV and TV boxes. It removes ads, supports SponsorBlock, works without Google Services, and is designed for large screens and remote controls.
Note: the developer recently disclosed a build environment compromise and has since rotated keys, rebuilt the environment, and added additional verification steps. Users should update to the latest version and verify sources. GitHub: https://github.com/yuliskov/SmartTube
Been using this for years, it's fantastic. You have to stay on top of updates as they are in a regular wack-a-mole cycle with Google.
I concur it's a fantastic app. Especially the sponsor block is brilliant.