CTU-NetTest is a handy tool for measuring the speed of Internet connections. It allows you to check the quality of service (QoS) as well as to test the speed of both upload and download. It is a useful application for anyone who uses the Internet, and it can be used on all mobile devices. The measurement process is very easy and the results are automatically saved on the website. There are three different measurement scenarios: the first one is for the normal measurement, the second one is for the loop mode, and the last one is for the certified measurement. In addition, there is an option to measure the signal level of the network. All of these scenarios can be selected from the menu, and they are described briefly in the menu as well. It is also possible to use the application as a pinging tool. The application has been developed with the assistance of the developers of CTU, and it is available for Android devices.