On top of the nine free images, there are also a total of 45 additional images in 5 collections that can be purchased and unlocked. The collections include: Aerials, Man and Nature, Paniolo, Surf and Tilt Shift. For the iPhone, each collection cost $0.99 or $4.99 for them all. On the iPad, each collection will run you $1.99 or $9.99 for the whole set. Images can be added to your photo library for viewing, or be used a as a screensaver/background.