From the Store description:
On-the-go photo editing was never so fun, fast, and cool. Touch your way to better-looking pictures with automatic fixes and filters. Get your pictures to pop! And after sharing, you’ll be the talk of your friends.
• Basics: Crop, Straighten, Rotate, and Flip your photos. Remove red eye.
• Auto-Fix: One-touch adjustment for Brightness, Exposure and Shadows.
• Color: Slider controls for Exposure, Contrast, Clarity, Vibrance and more.
• One-touch filters “Looks”: Choose from over 20 eye-catching effects!
• Get creative by adding the Looks Pack* and Noise Reduction Pack*
• Share easily to social sites like Instagram and Facebook, and via SMS text.
Here's Adobe Photoshop Express in action on my Lumia 1020:
An initial set of introduction screens impress - this is a welcome modern trend for Windows Phone applications....
'looks' and 'adjustments' are as they sound - looks are presets, while the latter all have sliders to adjust the intensity of an effect or attribute....
Noise reduction is clearly an advanced (and proprietary) algorithm, since Adobe is charging £3.49 for the privilege!
The 'Looks' pack is a lot cheaper and comprises a dozen really rather interesting and unique effects - just grab them and consider the £2 the 'real' cost of Adobe Photoshop Express...
Red eye fixing is well done (and also one of the free effects), with both manual and 'auto' modes; (right) Adobe's attempt to hook you into yet another photo storing and sharing service!
Arguably the most comprehensive of the existing Windows Phone photo filter applications, this is also arguably the most expensive, if you buy both packs. Many will be happy with just the basic though, and the application is very slickly implemented. Plus the 'Looks' pack won't break the bank.
You can download Adobe Photoshop Express here in the Store, to make up your own mind, and do please comment.