Currency Assistant is a very flexible currency conversion calculator. It lets you convert between 174 world currencies and automatically updates exchange rates over the Internet. With Currency Assistant you can easily create multiple converters, import and convert series of amounts, calculate and convert the result of expressions, and quickly log, save, export, and print your conversions.
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Currency Assistant requires Mac OS X 10.4 or later (including Mac OS X 10.8 Mountain Lion) and runs natively on both Intel-based and PowerPC-based Macs.