MaxCurve is an app for iPhone and iPad that, as the name suggests, relies predominantly on curves for image editing. Overall, there are 20 curve adjustments available which are grouped into so-called kits. There is an RGB kit for separate editing of red, green and blue color channels, the lightness kit lets you adjust contrast and exposure among other options, the HSL kit is dedicated to hue and saturation and the lab kit allows for editing of lab color. Overall, these options should satisfy even the most perfectionist image editors, and if things go wrong there is also an undo option.

If you create curve adjustments that you are particularly fond of you can save them and even share with other MaxCurve users via an online platform. In addition to the curve adjustments the app offers a range of more conventional editing tools, such as cropping, rotation, mirror, sharpness, grain and vignetting.

Another key feature of MaxCurve is its ability to connect, via Wi-Fi, to a desktop version of Photoshop that is running on a Windows PC or Mac. You can then import an image that is currently open in Photoshop into MaxCurve, edit it in your mobile device and save the final version back to your desktop. The app is capable of processing images in JPEG, TIF and PNG formats and up to 4096 × 4096 pixels in size. MaxCurve is available now for $2.99 in the Apple App Store. To see how it works watch the brief video below, more information can be found on the MaxCurve website.