Calculator by Richard Walters (U.K.). Do the math with five calculators in one (Basic, Scientific, Programmer, Currency Converter and Unit Converter) with large buttons for quick, error-free typing. Perfect for your next adventure, Calculator² helps you convert more than 150 world currencies and more than 200 units for conversion across 17 categories. Richard Walters was a physics Ph.D. student looking for a decent scientific calculator on Windows 8. He loved the experience of building the app so much that he gave up physics for a career in app development. Image credit: Microsoft (Click image to enlarge)
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