PetaTube - Advanced Video Tube by PraByTech is a free multimedia app for Android that allows users to discover and watch millions of free videos in high-quality. The app offers a range of features, including the ability to play videos in the background while using other apps, and to play videos in floating popup mode.

One of the standout features of PetaTube is its ability to play videos in resolutions up to 8K. The app also allows users to search for content, browse and erase their viewing history, and import and create playlists. Additionally, PetaTube supports picture-in-picture view on Android Nougatand above, and features a dark theme.

It should be noted that PetaTube is a third-party tube API, and the contents of the videos are from the API services. The app complies with the API Terms of Use, but it is not affiliated with Vanced YouTube. Overall, PetaTube is a stable and fast app with a clean and intuitive interface, making it a great option for users looking for a multimedia app on Android.