The service is a bit strange at first, as the only indicator is an LED that glows times yellow, red, blue or green or blinking. However, the free Android app (or PC-program) is very clear and it is easy to adapt here the camera on your needs.
Unfortunately, it can easily happen that the lens is rotated slightly (at about strength chamfering). You get it back in focus, but you get only with that the lens is adjusted, if one takes the next (blurry) photos or movies from the card.
But this claim I had the Cam not when I bought them for my FPV-Copter! (C: