You can test the Hardware of all your iOS devices, every single function, from the display, button, speaker, microphone and all the other parts!
No, we designed it to be run by everyone, no technical knowledge is needed, just tap on the test that you want to run and follow the steps showed on the screen.
Absolutely not. The app is a stand alone solution, you can just install it and test. But.. if you need some more functions we have also developed a Mac OS client with which you can do many other things!