The networktest.ch measures the speed of your current internet connection: upload, download and Ping/RTT.
With the start button you start the test. The menu is located on the left side and offers you further selection options like return to the start page and thus to the test, history, information and settings.
The app from the "Verein Qualitätsmessung Internetzugänge" provides you with measurement results that comply with the regulations and specifications of the Swiss Federal Office of Communications (OFCOM).