MLV Auto Currency Switcher

Excellent and has solved no end of problems on two company sites. The paid version rounds up the foreign currency amount and has already increased sales because when the old currency converter switched from US$ to £ it showed for example $199.00 as £112.51 now it just shows £113.00 which is vastly better.

The guys at Auto Currency Switcher even linked it to the site within no time so I can't fault the app or the service.