Photoshop Express's features don't come close to matching the number of features on the desktop version, but there are still some impressive ones. Double-click on any of your photos to Photoshop Express stores an interactive history of steps
go into the editing mode, All the tools are visible on the left side of the photo.

Presets for each of the features are available on the top pane. The up arrow icon at the bottom of the screen shows a preview of all the changes made from the original photo. One of the interesting features of Photoshop Express is Pop Color. This tool can replace a particular colour with another. In photos where most of the area is of a particular colour, it works very effectively.