This application allow you to use your telephone as a light meter. A light meter is a device used to measure the amount of light. A light meter is often used to determine the proper exposure for a photograph. A Light meter is also used in illumination. His purpose is to measure the illumination level in the interior and to switch off or reduce the output level of luminaires. Features: - Display the current and maximum ammount of light level in LUX. - Display a graph of the current light level in LUX. - Display the recommended activity with the current light level.