i’ve found this app here.
The Simple Pocket Media Downloader aka. TSPMD is an audio and video downloader app for android. It supports various tubes.
Thanks to this app, you can save all of your favorite songs and videos locally on your device and watch them later without an internet connection.
According to the developers of the Tubemate, this is the successor app to the legendary tubemate downloader.
Does anyone already know this app?