Go to: github.com / yuliskov / SmartTubeLegacy (remove spaces). Note: The developer has archived this repository, but the files are still available for download.

Both apps are tailored for TV boxes and smart TVs, offering features not found in the standard mobile app: Smart YouTube TV (Android 4.0+) APKs - APKMirror

: Specifically designed for use with TV remote controls rather than just touchscreens.