Force Meter was designed with a mission to measure G or motion acceleration of your device on any occasion. With this app you can check the acceleration of a car, train, an aeroplane, or simply your own push. Input the mass of you device, to also obtain an accurate estimate of force acting on it. Addtionally, challenge your friends to determine the quickest and the strongest punch amongst you.
Should you be curious about gravitational pull of the Earth or other celestial bodies, this is a perfect tool to determine it empirically. The app, wrapped in a very elegant layout, uses various units, so no matter where you live, you will understand the readings.
At the end of the day, you can use it as a converter between grams and ounces, meters and feet as well as Newtons and lbf.