Plain and simple: it works. – FAST Speed Test Review

The app is small and not the most attractive or feature rich. That's what makes it so amazing. It's super fast at telling you just what you want to know if your a media consumer. I will say that the fact they are not measuring upload or jitter or ping time they can give a far more accurate download measurement. If your a technical person who needs upload stats or well any other information than a pure download speed measurement than I would look elsewhere.
Review by newtonmaclover on FAST Speed Test.