The app calculates color temperature (Kelvin) by analyzing real-time light data via the camera sensor. No photos or videos are stored or shared.
Point the camera at a neutral/white area of your display from a distance of about 10-30 cm. Keep the device steady for a few seconds for the reading to stabilize.
Some Mac built-in cameras do not support hardware white-balance readout. In this case, the app will automatically use its pixel-based calculation for an estimated result.
On iPhones, the app leverages factory-calibrated hardware gains for high precision. On other systems, it uses the advanced CIE 1931 color science model.
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