We compared Fast ★★☆☆☆ with Xfinity Speed Test ★★★★☆ and concluded that Xfinity Speed Test is a better speed test than Fast.
This is mainly because Xfinity Speed Test is much more accurate than Fast.
However, if usability is important to you, it's best to use Fast.
The radar chart above is based on the results of our standardized speed test test. The results speak for themselves.
Strengths of Fast
By far Fast's strongest point is its usability. The speed test starts automatically, and has an interface that clearly shows one thing, namely the measured download speed.
In addition, you can easily pause the test. Furthermore, Fast is ad- and cookie-free.
It is therefore not surprising that Fast scores high on the list Usable speed tests and on the list Privacy respecting speed tests.
Strengths of Xfinity Speed Test
The Xfinity Speed Test has a sleek interface with aircraft-based speed indicators. The speed test is ad free.
The Xfinity speed test is a fairly accurate speed test, but the variance can be quite large. Therefore, multiple tests are recommended when using Xfinity.
Ultimately, the speed test provides a clear and understandable interpretation of the results.
Our recommendation
Based on what we know about speed tests, if we had to choose between these two speed tests, we would choose Xfinity Speed Test over Fast. The deciding factor is the accuracy of Xfinity Speed Test.