Refunds, emails, and reviews are the only way I can tell if the unlock is working. And if possible, send me an email to let me know it failed. I've had trouble with it in the past, so if you try to buy the unlock and it doesn't seem to work, IMMEDIATELY request a refund from Google. This app uses an 'unlock' in-app purchase.
Score Center for Phase 10 is the best looking, and most feature filled Phase 10 scoring app on the Android Market.
