Most people don't realize they need a ruler until it's too late. Nobody really carries around a ruler or tape measure in their pocket unless they are in construction or carpentry. Well, this app solves that issue. Never again will I be in a position where I need to measure something only to try and guess the length due to not having something to measure with. This app is a popular utility app and it does the job very well. It also has an accelerometer and a gyroscope for those who need them. Bottom line, this is an app that's overlooked for value in everyday life.