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Add your hack to this list. Voting is based on the numbers on this list, so please don't reorder anything. Go to to see the current votes.

  1. SampleHack
  2. - The next release of's venue-monitoring whitelist action service, using the new push notification api, adds custom callbacks, data passthrough, per-venue slow and fast monitoring, and a few other surprises.
  3. Badge Assistant - A map visualization of where your friends have earned the badges you still don't have.
  4. Treasure Hunt (work in progress) - A game where you go find a treasure by going place to place following clues
  5. FourGraph - auto-generate your own infographic (like this one:
  6. Foursquare Munchkin (not presenting today) - Battle monsters and level up with your checkins! Kingdom of Loathing meets 4sq: a lightweight, humor-filled RPG.
  7. Foodie - Check-in not just to places you go to, but to menu items (food/drink). Next time you open your app, you can not just see interesting places, but also interesting food/drinks in the vicinity. Live now at
  8. Foursquare Chat - Check in, and chat with the other people at the venue.
  9. Trip² - Foursquare/TripIt mashup to see what venues are around your itinerary items -
  10. ArduinoSquare - enable an Arduino micro-controller to check-in on foursquare, but the big idea is sending the micro-controller in a low-orbit rocket/balloon to get the NASA badge ;)
  11. BearMode (Not presenting today)- Your personal online trainer, set a fitness goal and forget the rest. Get personal workout plans via TxT msg and voice reminders if you miss a goal. Workout, no excuses!
  12. MakeThemPay.Me - Easy bill splitting using 4sq check-in data
  13. StickySquares - Find great place areas w/ sticky social action— For trendspotters, small biz, real estate developers, event, urban planners etc.
  14. Voxora - Add voice messages to your 4sq checkins. Review a venue, complain about service, sing karaoke, ...
  15. 4sqTODO - Sync 4sq todo lists with TaskPaper, Simplenote, PlainText and friends -- 90% complete. I wish I could stick around to show you, but I've got a dinner date in 5 min :( -- @bobthecow
  16. Tips Sentiment - Visual representation of mood at venues based on sentiment analysis of tips.
  17. Check-in Visualizer - Provides a visual representation of your checkins on a map. (not presenting tonight!)
  18. Agora - Connect with people using Foursquare and Twitter.
  19. Venmo - Tag a payment with a place and check in on foursquare automagically.
  20. - quick checkin via browser bookmarklet (or browser extension)
  21. - Leave private messages for your friends at a specific location. When they check in, they get your message! (Inspired by
  22. FourPlay - Instantly hit on fellow FourSquares on your night about town!
  23. starsquare - a mobile economic trading game using real locations - @mik3cap, @kupad, Paul Fryzel
  24. Foursquareand7yearsago - a mobile economic trading game using real locations
  25. Poconote (Not presenting today!) - Write, track, and share inspiration anywhere.
  26. HottiesInHere - Help find the hottest spots in town.
  27. SXSW rsvps (Not presenting today!) - Import your eventbrite rsvps into foursquare as to-dos.
  28. Hail To The Mayor - a jukebox playing your favorite songs upon checkin
  29. Vote Mob: SXSW - Vote on what parties and events you and your friends will go to next.
  30. Moonwalk - Ask + Answer questions in real-time with users checked-in at venues.
  31. GroupSquare (Not presenting today!) - Get Groupon deals and combine them with the Foursquare platform.
  32. Foursquare Lists - lollists
  33. Tin Canary - (Not presenting today!) An itinerary generator for pub crawls and other classy multi-stop nights on the town.
  34. Foursquare Googles - View foursquare photos on a map
  35. Badge Gravity -
  36. VenuePages - Enables venues to build Micro Apps and push them to checked in Users
  37. suBEERior - (Not presenting today!) a better way to track your alcoholism
  38. When to Go - (Not presenting today!) a way to see checkin trends over the course of a night for specific venues
  39. AugmentSquare - Reality, augmented, with foursquare!
  40. Blackout - I know what you did last night.
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