It only saves a couple of mouse clicks, but is a slightly faster way to to get to the rates. When I want all my exchange rates, I just click on the XE icon on my windows desktop and it automatically opens the Bluestacks emulator and displays the exchange rates. I deleted all of them, except for the XE Currency Converter icon. With Bluestacks, any app you put on the emulator, it creates a shortcut icon on your Windows desktop. Now, this is where my work around differs slightly to the OP's, and it's through no doing of my own. From install, XE only gives two digit accuracy, but if you go into the settings you can add more accuracy. From there, you can select a base currency and add a list of currencies you would like the exchange rates for. I then downloaded the android app onto the Bluestacks emulator.

I have been using an android emulator for a long time, mainly to run android TV streaming apps on a Windows machine. I am using the Bluestacks Android Emulator. It's not so different from the OP's work around running in a similar thread, just a different combination of software. I am not saying it's the best alternative for everyone, but some might like to give it a try. I miss having that desktop gadget, but I will post what I have found to be the best alternative for me. Below is the work around I am using since the Currency Meter stopped working, again.

Windows 7 gadgets stopped working