Awesome plus
The bad news is if you are using an old iPhone, like the 4s, you are missing out on a lot of features. I upgraded to a 6s and I love it. The app is intuitive to access exposure compensation and focus, and it responds quickly. The burst mode is amazingly fast. I also like the motion blur option. It is a good all around camera app, with the exception of not being able to do sweeping panoramas like the native camera.
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ProCam - Pro Camera