By trey, 1 November, 2016 Forum iOS and iPadOS hi all, is there an IOS app that will scan a light on a product and tell me if the light is on or off and what colour the light is? your help with this question would be most welcome, kind regards trey. Options Log in or register to post comments Comments Light scanning app Try boop https://itunes.apple.com/my/app/boop-light-detector/id1134857212?mt=8 i haven't downloaded it... Try Boop bight detector. Don have it, but from what I've read, it does all you need. No color Boop is good for finding light but it does not tell what color the light is.