

The Corrections module is where PS Express Mobile reveals its Photoshop heritage for quality image editing, with sliders controlling clarity, tint, sharpness, contrast, highlights and more. You can constrain your crop to device size (great for screen savers), to a square (for Instagram) or to other popular aspect ratios, such as 4 x 6 and 5 x 7. The Crop section includes a straighten slider, rotate and flip, in addition to the crop tool. The seamless integration of the add-ons could be frustrating to users who aren't interested in spending money on the app, but are pulled in by the smooth marketing of having them in the interface as an extra tab. Similarly, the Adobe Advanced Pack (for another $5) offers Adobe quality noise-reduction and defogging (which ups the contrast).

PS Express includes only 23 Looks (which is fewer than most of the other apps we've reviewed), but Premium Looks are available for $5. A slider controls the strength of the Look from very subtle to full power. For instance, the Aquatic filter creates an attractive monochrome image with a very slight blue cast. Looks are predefined filters that may not knock your socks off in terms of special effects, but they tend to produce good quality images.
