This app has powerful functions and it is very easy to use. You can use this app to merge lots of photos into one photo through a very simple operation.
and you can post the photo to instagram.
Required Android O/S : 2.2+
Features:
You could customize the style or use templates to merge photos.
Shake your Android device to change the photo template.
Provides a lot of beautiful frames and background templates to make the result photo much more beautiful.
You could share your photos to instagram, Facebook, Twitter, Tumblr and Flickr.