This pocket field guide expands to six panels on each side with screenshots and red circles and arrows directing you to which buttons to tap on your phone when editing, as well as key settings within each app.  The entire back side covers Snapseed, which is one of the most powerful and versatile top-rated free editing apps available today for iOS and Android users.  Measures 7.5 x 4.25” when folded.  Small enough to carry with you in the field!