Did you ever visited a country with another currency in your home country? How did you manage the currency problem?
The last summer I traveled around Europe with a friend and we also visited countries like Hungary where they haven't the â‚¬uro. We always had to believe the exchange rates the bank automat showed us.
To solve this problem I founded with another Android developer the OpenAppsProject. The OAP should be a community of Android developers who love to code Open Source apps.
OpenCurrency is the first project. The still very small app helps you convert any currency in any other currency based on the always up-to-date exchange rates given from the European Central Bank.
But I suggest you to try it yourself!
If you want to help developing OpenCurrency feel free to contribute to it. It's available on GitHub.
Initiator of the OpenAppsProject