The weekend is almost over, but right now there is a Universal app that is free (at least for now). It’s called Orasis.
Orasis is a brain-inspired photo correction app whose objective is to restore and enhance your digital photos. Its unique photo correction algorithm, which is the result of academic research, is inspired by the neural mechanisms of the Human Visual System.
Your retouched photos should look closer to what your eyes perceived at
the exact moment your photo was taken.
I tried this out on a few photos and it seemed to do a good job. Here is one example of a street shot I took as the sun was setting. It’s definitely worth grabbing right now! The final image was the same resolution as the original on my iPhone 5 (2448×3264 pixels).
Here is a much larger version of the before/after if you want a closer look.
You can download Orasis on iTunes.