A free app for Android, by Sigma Systèmes inc..

Tube Trending is a free video app for Android that offers a quick, easy, and reliable way to browse through the most popular videos from around the world. No need to waste your time and effort on finding and downloading videos. You can now simply search through the entire catalog and enjoy your favorite content without any hassle.

This is a third-party app, which means that it is not affiliated with YouTube or any of its partners in any way. The only thing you need to do is to install it on your device and you are good to go.