Photo Album inside an app

Do any of you know if it's possible to make a Photo Album inside an app? The app that I'm building has a lot of features, one of them is to take a picture, write on top of it, save it, and then mail it if you want. I know the photos go to the Camera Roll Album, but is there a way for them not to go there? If not, then how can I bring them to my app in some sort of thumbnail scroll gallery or something so that I can edit them and resave them?

Important Note: the many features also consume a lot of memory, so I'll have to use the least resources possible.

Check out UIImagePickerController.

You can also save your photos to the Documents directory as well, it doesn't have to be the Camera Roll or Photo Library.

Source code see here