The 10 Free Apps You Aren’t Using, but Should Be

Super Swiss Army Knife

Free on Google Play Store

Did you ever wish your phone could become a knife? Well it can’t, but this app transforms your phone into almost everything else you may need. This app can transform your phone into a flashlight or ruler; it also allows you to measure the distance between you and another object, as well as the height of that object. And it has a bubble-level tool, which helps you check whether objects are level, and a cross-vertical-measurement tool, which tells you whether an item is level and—if it’s not—the angle of deviation.