Great, if you understand it.

The ones giving less than 5 stars dont have a clue as to how this app works, or when to use it. One reviewer said "Ill test it next time I go see fireworks."

Wrong.

In the description of this app, it says subject must be stationary for 2-10 seconds.

Its a very clever idea and produces much crisper images with details that are often lost in the RGB noise that usually accompanies photos taken with the regular camera app. Great for low light, but also great for getting the most out of your pics during the day. For best results, use a tripod or rest the phone on something. Also, SUBJECT CANT MOVE!

Sometimes processing time seems a bit long, but results are worth it. The only thing frustrating about the app is the images come out slightly cropped compared to the regular camera....but its still what you see is what you get in the viewfinder, so there are no surprises.

If you cant tell the difference between a photo taken with this and a photo taken with the regular camera app, youre probably just posting pics of your drunk duck face anyway.

Andrew Hildebrand about Cortex Camera, v1.7