The Google Play store won't let him buy an app unless he has a supported device installed. The chatroom says he could install the Android SDK and create a virtual tablet and register it. That's a long way to go to save a few bucks though. He could also go to a brick and mortar store, log into the Play Store with a demo device and buy the app that way. He may be able to buy a gift certificate. Another option is to contact the app developer and tell them the dilemma. Maybe they'd do something for him.