Tube Surfer is little more than a targeted search tool for YouTube, but it is a well-designed search tool and it offers enough prefilled options and works fast enough that frequent YouTube watchers will love it. If you are looking for a multifeatured YouTube application this probably isn't it, but if you are looking for something that will allow you to view various videos from YouTube by keyword or category, then this is a fantastic tool in many ways.
When you open Tube Surfer you will be given a long list of categories and keywords that the software has already populated. Tap one of these and you can view a long list of video tiles. Each video is pulled from the top lists on YouTube for that keyword. It may seem like a standard search, at first, but the filters here are solid -- rarely did we see any videos that were not very close or exact fits to the search, even when using the custom search bar. Videos will load directly in the app, as well, and everything moves very quickly, even when loading large videos.
Tube Surfer feels, at first, like another unnecessary YouTube browser, but it is fast, easy to use, and seems to filter search results very effectively. As a result, this is a great tool and one you should consider if you browse and watch a lot of YouTube videos on your phone or tablet.