Gowalla is in direct competition with Foursquare, and if you’re not familiar with that application, why not just check out a quick demo of the iPhone version below:
You could previously use Gowalla on Android through their mobile site but the native app is a nice surprise. Not only that but MG Siegler says the Android version is already better than the iPhone version for a few minor reasons – take that!
Are you a Gowalla user? How does it compare to Foursquare in your opinion?