Tint meter is free app, that check car window transparency.After external and internal illumination measurement, the tint meter will show the degree of transparency the automotive glass - vlt (visible light transmission) as a percentage.To determine the transparency of glass with a film, the light sensor of your smartphone is used.The light sensor is usually located at the top of the screen, next to the speaker and the front camera of your device.Features: Check vlt (visible light transmission) of car window No internet connection required Free to use tint meter