exchange-rate

A single page iOS app for currency exchange rates.

The API used to retrieve currency information is http://fixer.io/

Key Features

• Convert money between Russian Rubles (₽), US Dollars ($) and European Euros (€);
• Bidirectional conversion. You can either type on the left or on the right side;
• Possibility to use older rates from previous dates;
• Autolayout support that works across different devices and orientations:

Here is the UML diagram.

This app has no "Convert" button to call the API and make the conversion.
The conversion is done automatically on every keystroke, or more precisely, 1 second after the last keystroke, hence the reason for a timer.

Developed on XCode 7.0.1
Development target: iOS 9.0