I love camera apps! So today I tried Halide. With Halide you can do manual focus, set the ISO, etc. Here's shot of the new N Building at Georgian.
I hardly use Halide, but it's a cool app. But I do use Hipstamatic. Here are two shots taken with different lenses and films. If you have not tried Hipstamatic, give it a try!
And lastly, one app I've never tried is Photobooth. And just like it suggests, it creates a strip of 4 photos.