FREE - In Google Play
FREE - in Win Phone Store
I've also noticed that the records of some of my games do not display right away in my history, or, more perplexingly, display right away, but then fail to display when I navigate away from my history page and subsequently return. I have no idea how this happens, nor how it could happen, but I imagine it has something to do with the way that the database is accessed.
You may find, as I have, that logging out and logging back in a short time later will resolve such issues.