An Ubuntu Touch tutorial by David Planella (code by the SDK Team).

From the tutorial documentation: Currency Converter performs currency conversion between two selected currencies. The rates are fetched using the European Central Bank’s API. Currencies can be changed by pressing the buttons and selecting the currency required from the list.

To install the Ubuntu SDK, please follow the instruction on the developer documentation.

Previewing the application is easy using QML Scene:

cd currency-converter
qmlscene currency-converter.qml # QMLScene is part of the Ubuntu SDK