The Good: Pixlr Express offers more than 600 effects that all work well and are easy to use. Its Auto Fix and Focal Blur (tilt-shift) tools are particularly effective. The Bad: App doesn't warn you before backing out, which can result in lost work. A Recent Files picker upon launch would be nice. The Bottom Line: With over 600 effects on board, Pixlr Express is one of the most powerful Android apps in its category. Despite its minor flaws, it should be your go-to mobile photo editor. With a name like Pixlr Express, Autodesk's new flagship photo editor for Android sounds as if it should be a relatively light app with only a few basic features. On the contrary, though, it is about as powerful a mobile photo editor as we've seen. \n\nYou may not know it, but Autodesk, maker of the design and engineering staple AutoCAD, has been in the Android photo editor game for a while now. Previously, the company's Pixlr-o-matic was one of the more popular photo editors on Google Play, but its newest title, Pixlr Express is significantly more powerful.\n\nUpon launch, Pixlr Express's start-up screen lets you either take a new photo or choose an existing photo to manipulate. From there, the app transports you to the editing screen, where all of its powers are split among four categories: Adjustments, Effects, Overlays, and Borders.\n\n\n\nAdjustments\nThe Adjustment menu offers a wide array of photo manipulation powers, by way of familiar tools such as Crop, Rotate, Blur, Color Fix, Brightness and Contrast, Sharpen, De-Noise, Red Eye Reduction, and Whiten. Dive a little deeper, and you'll see that each of these tools comes with its own settings, so you can micro-adjust any changes before you commit them. For instance, you can control the radius of the Sharpen tool and the tolerance of the Red Eye tool. These sorts of fine tuners offer a huge advantage over many of the other tap-to-apply photo editors out there.