This is a simple application designed to use your Android device's screen as a map light. Green light makes features such as grid lines easier to see over other colored lights. It's also not as harsh on your eyes as bright white light for night-time settings. This app allows you to variably change the light level with a slider, making it easy to select the minimal amount of light to accomplish your task. You can use the light above or below a printed map depending on your screen's maximum brightness capabilities. The light level selected will be saved, so when you re-start the app, you will know how bright the screen will be. It does not use any advanced features like GPS or Internet, so you can be assured about the safety of this app.