Its a simple and accessible YouTube downloader for your android phones.

Features:

• Supports downloading ALL resolutions including 1080p, 1440p, 4K and 8K.
• Supports downloading audio.
• Supports downloading playlists.
• Download accelerator support.
• Automatically merges thumbnail(artwork), tags and other metadata when downloading audio.
• Provides option to merge metadata to video downloads.
• Supports downloading videos as VP9 format.
• Supports downloading audio as Vorbis / Opus codec.
• Supports downloading 50fps / 60fps.
• Supports resuming paused downloads.

Powerful engine:

arkTube uses one of the most actively developed open-source project in the world : youtube-dl.

• Supports downloading all options.
• Optimized downloader for faster downloads.
• Download without any loss to quality.
• Consistently updated for best compatibility.

Importent Notes:

Video that requires adult authentication or login, marked as hidden from public, is a live-stream may be unsupported.
VP9 is a new video codec from Google that improves video quality and reduces overall file size. Galaxy S6 and Galaxy Note 5 currently supports VP9.
50fps / 60fps with 1440p+ resolution is only provided as VP9.
If you run into issues, make sure you're running the latest version and contact the developer with the URL of the video.

These features require additional donation package to be installed.

Usage:

1. Use Google's YouTube app and select a video.
2. Select the share button on the top right corner, and choose arkTube.
3. Use a separate video player and watch the downloaded video.