In terms of compatibility, Andy is truly spectacular. Users can install the emulator and play virtually any game with no problem, like Clash of Clans, Candy Crush Saga, Fruit Ninja, Plants Vs Zombies 2, or The Sims, to name just a (very) few. That said, perhaps the best part is that Andy also lets you use IM tools like WhatsApp or WhatsApp Plus. All you have to do to use them is identify yourself with your phone number, and then you can start using WhatsApp on Windows.
Andy is an outstanding Android emulator, reminiscent in many ways of the also excellent BlueStacks but with some additional improvements. When all's said and done, a very convenient way to use any Android app on your usual computer.