From Bahtiyar Polat:
LockBlur allows you to design beautiful lockscreen wallpapers by simple swipes. You will be amazed how simple image will turn into beautiful blurry wallpaper within seconds. It comes with built-in shapes where you can create your design accordingly. Tapping top or bottom of screen will put you on preview mode and you can set your design into desired position by pan and pinch gestures once you are happy with your design you can share or save on your device and set as wallpaper.