My first impression is that the framerate is significantly lower than with the stock camera - making for an overall sluggish experience.
Some random impressions while checking out its features:
- the Photosphere feature looks like a quick addition/afterthought, as the 'dots' you have to connect are just jagged sprites/images, instead of smooth circles - perhaps not that important functionality-wise, but it looks sloppy to me.
- The interface might work after a while of practice, but for now it forces me to hunt around for options too much - the ability to open more than one 'toggle group', seems more like a necessity (so that I can find the option I want) than a feature I'd use after I know where each toggle can be found (I compare it to finding a file on my computer, I know where each file/folder is, partly due to descriptive names and a clear structure. But if I needed to find something fast, I would not open all the folders until I found the file, I would just use a search function).
And I too have had the forced closes, black screen when opening it until I close the process, but that I can forgive of an... alpha-quality release.
I'm on stock 4.3 if that makes any difference.