GOWALLA Though similar to Foursquare, Gowalla is less social and heavily incorporates a game feature. Users check in at different locations around their city as their smartphoneâ€™s GPS verifies their location. Earn virtual prizesâ€”points, stamps, icons and pins of gloryâ€”when checking in. Gowalla has about 340,000 registered users and 1.4 million â€œregisteredâ€ venues. Some companies are leveraging Gowalla by offering deals and giveaways to people who check in at certain times.