For any globetrotters out there, this app is an absolute must. XE Currency shows you over 180 currencies from around the world and converts them into the currency rate of your choice. With up-to-the minute updates as well as the last rates being stored on your iPhone, you can also use XE Currency offline to avoid costly roaming charges when abroad, meaning that should you go somewhere with no signal or Wi-Fi, you’ll still be able to get accurate rates. You can view currency charts for every currency pair for the past year, to see how the market is changing; in addition to monetary rates, you can also see the exchange rates for precious metals for all you budding Rockefellas!