A free app for Android, by Digital Dreams.
The Army Knife is a handy toolbox that allows you to do many things. Among these, there is a calculator, a stop watch, a timer, a magnifying glass, a mirror, a ruler, and a flashlight. The app is free and the tools are easy to use. The best part is that all of them are very small and you will not need to install the app on your phone or tablet.
What can you do with the app?
With the app, you can do the following things:
Use the calculator to calculate the area, volume, and weight of different objects. Measure the temperature and the degree of air pressure. Calculate the distance from the earth to the moon. Calculate the angle between two objects. Calculate the power of gravity. Calculate the mass of different objects. Measure the angle of the sun. Measure the time since an event. Use the stop watch to calculate the time. Use the magnifying glass to magnify objects. Use the mirror to view the image of an object.
