The screenshot says US$100 -> EU$86.0499 Can the user enable rounding? I'd probably be happier with EU$86 or EU$86.05.
How do you handle fast moving exchange rates? Hi from Argentina! It's not so "interesting" now, but it can change + or - 30% in a month. I'd be worry to use offline data that is more then 1 week old (and perhaps 1 day is too much).