LaChirris

I love this app. You have full and precise control on Exposure, Focus, ISO and White balance. Manual focus fine tune is easy to use, and you get very well focused shots every time! User interface is easy to understand and yet it has many advanced settings, making this app's learning curve easy-peasy, you get pro shots since minute one. The last update bring to us the ability to shoot using the volume buttons on the phone and also in the headphones volume buttons. I just love it. It also has a detailed photo browser which shows you resolution, iso and shutter velocity of that particular picture