Daltonizer is a free Android application developed by NGHS.fr that simulates color blindness using a device's camera. The app can help users understand how color-blind individuals perceive the world or choose colors that are visible to them.

The app offers several color modes, including Protanopia, Deuteranopia, and Tritanopia, which simulate different types of color blindness. It also features a split-screen view that allows users to compare color blindness with normal vision. Daltonizer is a useful tool for anyone who wants to create designs or images that are accessible to people with color blindness.

Overall, Daltonizer is a straightforward and helpful app that accomplishes its purpose with ease. It's a great tool for those who want to learn more about color blindness or design with accessibility in mind.