How to allow the clone camera app to access my photos on my iPhone 4?

I downloaded the app… Which I love! I defiantly recommend it if you like to take fun pictures. It's worth the $1.99. Anyways, when it asked if it would like me to allow access to my photos I accidentally tapped "Don't allow." Now when I take a photo and tap "Save to camera roll" it won't save in my pictures. And the only way I can have the photo is if I screenshot it.

Try uninstalling the app and the reinstalling. You'll get the prompt again.

Behaving defiantly is very childish and quite unnecessary.