I have Words With Friends, version 6.7.1 that I downloaded from the Amazon app store on the device. The version I have on my Android phone has in-app purchasing enabled, such that one can get the ads free version, etc.
After hunting around on the Kindle Fire version, I can't for the life of me figure out how to enable the in-app purchasing for removing the ads and getting statistics. I have emailed Zynga at least 3 times inquiring about it, but I have never received a reply from them.
Does this feature exist in the Kindle Fire version?