TestCard is a fun little application for nostalgics -- or those who want to experierience what it was like to turn on TV in the middle of the night. Of course, you can also use TestCard to trick friends into believing your iPhone has a TV tuner.
The test cards come with authentic sound. A tap anywhere on the display brings on a little remote control. With it, you can turn the volume up and down or mute the test signal. Aditionally, you can switch channels. You can drag the remote to any location on the iPhones display. A tap onto the TV picture hides the remote again. A total of ten test cards are included in TestCard.
And no: TestCard is no TV tuner for the iPhone :-)