One of the most popular, free mobile unit converters and calcultors called: Convert any unit free. Whether you are baking and want to convert cups to ounces, or comparing exchange rates for foreign currency for a holiday, this app can help. You can input any amount and convert it into the desired unit quickly and easily.
Developed by Cider Software LLC, you can access a user guide online.Units & Currency Converter & Calculator,
Resource link: http://www.cidersoftware.com/