I bought ultrakam with the intent to capture high resolution video that could be stabilized, cropped, and resampled to 1080p without looking terrible.
It sort of worked. The video is VERY high bit rate (and resolution), and the ability to change the brightness is great. Unfortunately, the autofocus is not as fast, nor as accurate as I wish it would be. Im still trying to figure out how to get usable footage because the autofocus is constantly jumping around, in all the wrong focal range.
The app is otherwise great, but youll be fighting the autofocus a lot. I would probably buy it again. Maybe the developer can improve the autofocus a bit?