Tubex provides an "immersive viewing experience" by removing standard video ads and distractions.
If you find Tube X buggy or slow—as some reviewers have noted—consider these highly-rated alternatives that offer similar or better functionality: Google Play TubeX - Immersive video Player – Apps on Google Play
If you’ve been looking for a way to watch YouTube without ads or keep your music playing while your screen is locked, you’ve probably come across (now often found as