Oct 12, 2010 – Adobe Photoshop has an entry in the iTunes App Store that allows you to edit your iPhone photos on the fly – on your phone or on your iPad. Better still, this app is free!
Adobe Photoshop Express is a lightweight but adequate app that lets you crop your photos; change exposure, saturation, tint, and contrast; filter your photos to look like a sketch, sharpen your photo, or throw it into soft focus; and add borders and effects (like vibrant, pop art, vignette blur, and more) to your photos. You can share your edited photos with Facebook, Twitter (via TwitPic), or on Photoshop.com,
