I built a no-frills version of foursquare you can use straight from your browser.

Why should you use this?

1. You don't have a device with a native foursquare app.
2. Your native app is buggy and crashes.
3. You only want the core foursquare features: checking in, searching, and viewing your history.
4. You like the web.

Fun facts:

1. Cost: $0.99, from AppStoreHQ.
2. Built using HTML5.
3. Runs on Rails 3.
4. Is open-source and available at GitHub.