Mosaica WorlDesk is an app for business owners who do transactions across different countries and currencies. With it, you can:
View exchange rates
Set alerts to respond when things change
Convert prices directly from any website
See your exposure in different currencies
Coming soon:
Send and receive money at favorable times
Integrate with Quickbooks for bills and invoicing
Integrate with GMail for bills and invoicing
Download it and check it out for yourself!