Here's a link to the app mentioned in the OP: https://itunes.apple.com/us/app/billy-currency-converter/id1311724635 https://itunes.apple.com/us/app/billy-curren

Here's a link to the app mentioned in the OP: https://itunes.apple.com/us/app/billy-currency-converter/id1311724635 https://itunes.apple.com/us/app/billy-currency-converter/id1... @timojaask developed it and I designed it