Illuminant is an iOS app which turns your device into an off-camera lighting solution.
Using the built-in camera, Illuminant measures the color tone of the ambient or incident light and sets the screen color to match for color balanced photographs.
Create a soft and balanced off-camera lighting for a light boost or add some soft fill light to balance your lighting ratio. Use catch-light patterns to create reflections in the eyes of your subjects.
Best results are obtained with a full size iPad, but the app can also be used with the iPad mini or an iPhone or iPod Touch as a photographic light boost in your pocket.