This application helps with converting foreign currencies in to your home currency. It is a handy aid when you are in a foreign country. Just open the app, choose the local currency and enter the value and voila your cost in your home currency appears. The app remembers your configured home currency and credit card add-on charges.
The app uses Currency Rates published by European Central Bank. If you have connectivity (wireless or cellular), it will get the latest rates. Otherwise, it will use the downloaded prices. Try using the app at least once before going abroad, so that you would have downloaded the currency rates.