Well, I managed to find it on the Market no problems and have tried both the free and paid for versions, but it doesn't work on my Desire HD. When capturing it just shows a horrible green screen, as if there is something wrong with the resolution (and you can just about make out two camera images at the top of the screen behind the green screen). I tried all available resolutions, but all showed the green screen. I tried to capture anyway, but it saved no images at all.
Also, when you press the Home button after using it it keeps your screen timeout at full and even adjusting the timeout the screen remains on permanently.