The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Luo Xu:
Pic Montage helps you to combine multi photos to a single pictures, with stickers and add texts to make it looks great, and share with your friends via Facebook, twitter, tumblr, and email.Main features: Freely move, scale, rotate your picture as you want to. Apply effects to your pictures. Add text with colors and color patterns. Add hundreds of lots of kinds of stickers to decorate your pictures, to make it fun, or informative, or look good. Adjust the layer of picture. Customize backgrounds. Make use of those functionalities, you can get really interesting photos and experiences.