What is it ?
A colorimeter is a device used to measure the color of an object or surface. It typically uses a monochromatic light source (i.e. of a single wavelength) to illuminate the object, and measures the amount of reflected or transmitted light at different wavelengths. FizziQ's colorimeter uses a mobile phone's camera to measure colors in ambient light.
Colorimeters are often used in research and development laboratories to measure the color properties of materials, such as pigments, dyes, and coatings. They are also used in the printing industry to ensure that printed colors match the colors specified in print files. Additionally, colorimeters are used in photography and video to help adjust the color settings of image capture devices.