SnapTube can work as a mp3 convert tool, just download any music video directly as an MP3 file. No extra app or plugin needed.
MP4 videos are available in resolutions: choose from 144 pixels to the high-definition 2048 x1080 pixels(2K).
SnapTube,Free Download YouTube,Facebook, Instagram
Free Download HD Video & Music
Easy, fast and small
Version: 188.8.131.5257 (8257)arm + x86
size:4.37 MB (4,586,618 bytes)
Min: Android 2.3.4 (Gingerbread MR1, API 10)
Target: Android 4.3 (Jelly Bean MR2, API 18)