Groutr

I am always trying to work out what colour grout to use on my mosaics. This app really helps a lot. It needs some improvement in terms of the program not completely perfectly identifying the actual grout lines, but I’m sure that now this app exists, the developer will continue to improve it. In the meantime this is the best thing I’ve ever seen to help you choose a grout colour that won’t obliterate your hard work.