1- Add more photo if you want collage by button. 2- Delete a photo you can duble tap on this photo 3- More image on the screen by singer touch 4- Rotation photo and resize photo very easy by multi touch on this photo. 5- Choose and change background 6- More back ground beutiful load from data web. 7- Save image and share it very easy. 8- GUI beutiful and easy use!