The app uses the iPhone camera to adjust colors in a way that makes them easier to distinguish for color-blind people. The enhanced image shows up on the iPhone screen, allowing users to pick out flowers, choose matching outfits or take in the beauty of fall, for example.

Tom Overton and Tingting Zhu started working on Color Binoculars during Microsoft's 2015 Hackathon and they finished it in the company's Garage program, which helps experimental apps go public. Overton is color blind, so he was both a developer and the app's main tester.

Tom Overton and Tingting Zhu (Image credit: Scott Eklund / Red Box Pictures)

"It's an app that helps color blind people distinguish color combinations that they would normally have trouble telling apart," Overton tells the Microsoft blog. "For example, since I have difficulty distinguishing between red and green, our app makes reds brighter and greens darker so that the difference is more obvious. It replaces difficult color combinations, like red and green, with more easily distinguishable combinations, like pink and green."