The currencies in the description of the exchange rates appear to be swapped. It also doesn't allow to easily select and copy it out (had to press Ctrl+C while still selecting). Otherwise it's looking good :)
I wanted to copy out the "1 EUR = 0.961498 USD" part but once I end the selection (by releasing the mouse button) it selects the currency tile making the text selection go away.
I think a solution could be to make it non-selectable (as it works like an app) and instead provide a button to copy the information to the clipboard.