Cool, but... – Gradify - Custom Wallpapers for iOS7 by Pimp your Photos (+Valentine's Day Wallpaper) Review

The app closes every time I try to open my camera roll... I tried it on the sample picture, and they have some cool designs, but they are kinda hard to figure it out.
Review by Lily9462 on Gradify - Custom Wallpapers for iOS7 by Pimp your Photos (+Valentine's Day Wallpaper).