GitHub - spk/money-open-exchange-rates: A gem that calculates the exchange rate using published rates from open-exchange-rates. Compatible with the money gem.
GitHub - codeforIATI/exchange-rate-calculator: 💱🧮 Perform historical exchange rate calculations in your browser.
![Currency Converter HD: Exchange Rate Calculator at App Store downloads and cost estimates and app analyse by AppStorio Currency Converter HD: Exchange Rate Calculator at App Store downloads and cost estimates and app analyse by AppStorio](http://a5.mzstatic.com/us/r30/Purple117/v4/9e/b8/f4/9eb8f45e-080e-6ad8-a3ce-20fc84e36995/screen320x480.jpeg)