What is the best iPhone app for extreme low light?

I love the way the moon lights the floor in my bedroom in the middle of the night and every time I try to photograph it, the photo is black. I have the Slow Shutter app and when I use it, the photo turns out pink. What is the best app for capturing this moonlight or what can I do differently with an app I have?

The Nokia Lumia 920:
http://www.test-mobile.fr/actualites/nokia-lumia-920-comparatif-photo-de-nuit-avec-iphone-5-one-x-galaxy-s3-et-808-pv-046873/

Buy a real camera.