The app allows you to choose from 3 formats. Each of these gives you 2x2 photos but for a different purpose. Below you'll find an explanation for each.
Note: The Android app provides 2x2 photos in the 4x6 format explained below. This will give you SIX 2x2 photos.
TWO PHOTOS (4x6)
4x6 is one of the most popular sizes and also very inexpensive to print at a pharmacy or photo lab.
Use this format if you'd like to print 2 photos on a single 4x6. If you'd like to print a single 2x2 photo, use this format.
This is the size most people use.
SIX PHOTOS (4x6)
Same as above, but you'll get 6 photos on a single 4x6 print. Depending on the quality of the printing process at your photo lab/pharmacy, the edges may get cut off. Use the first option above to make sure the edges don't get cut off.
ONE PHOTO (2x2)
This single 2x2 photo is meant for sending electronically (for example attaching to application that you are submitting online). It is not meant for printing. If you want to print a single photo, use the top option.