The current color temperature in degrees Kelvin is continuously updated in real-time.
In the upper left corner you can see the recommended white balance setting to use on your camera.
A unique feature of this app is that it also measures the green-magenta tint (also known as Duv-measurement).
In order to measure the color temperature correctly the camera of your device shall be directed towards a white surface, such as a white piece of paper. When the camera is not directed to such a surface the app is automatically detecting this and displaying a message that tells you to direct the camera towards a white surface.
Use the built in calibration for improved measurement accuracy.
Save your measurements with a single click on the camera preview. It automatically saves date, time, degrees Kelvin before and after calibration, green-magenta tint and recommended camera white balance setting. If you like, you can also add a note to the the saved measurement.
There are a number of configuration settings that you can tweak in order to get the most out of the app, such as the time between each measurement (0.2 seconds - 2 seconds) for optimal performance and if the screen shall be kept on when measuring.