I used to have an iPhone, and would play this game with friends and strangers as well as my wife. Back in September, I switched to the Samsung Captivate Android based platform, and this is the only app that I wish was ported when I switched. There was an announcement that the app would be coming to the Android platform.
Well, my wait is finally over. I just installed "Words with Friends Free" from the Android market published by Zynga with friends.