WeTube is an unofficial YouTube app that provides all basic YouTube features. Beside, with WeTube, you can:
Block YouTube ads (in-video ads, banner ads, annotations) .
Automatically play video in 8K, 4K, 1440p, 1080p or any preferred resolutions.
Read subtitles aloud with text to speech engine.
Download video: Select video only, audio only, or both. Select video resolution from 144p to 8K (depends on video source). Select audio quality from 64kbps to 320kbps (depends on video source).
Watch video in slow motion or frame-by-frame mode.
Save video frame as image.