Diptic App for iPhone/iPad is one of my favorites. This app lets you combine multiple photos and merge into one new photo. It is easy to use. For an extra .99 you can make all the layouts expandable. This app gives you many options and the expandable part makes it limitless in what you can do. If you have an iPhone or iPad and love photography then this is a really a handy app to purchase.
I used Diptic to merge three of my Montana flowers into one photo. Diptic gets a big “thumbs up” from me. Love it!