For a few months now, I’ve been wishing for a Groupon iPhone app. Recently, the folks behind Groupon have granted my wish. The free Groupon iPhone app (iTunes link) is now available.

If you’re not familiar with Groupon, it’s essentially a group coupon purchasing website. Each day in a number of large cities across the United States, there is a daily deal. The deal is essentially a gift certificate/coupon to the location featured that day. You have the remainder of the day to purchase the deal before it changes, but enough people need to purchase the deal before the coupon is issued. If the required number of people don’t purchase the deal, you aren’t charged and the coupon is not issued. I’ve never seen a deal not purchased by enough people to trigger the deal however. The deals vary by city, as does the cost, value, and expiration date of the deal.

Up until now, you had to login to the website to purchase the Groupon. Once you purchased the Groupon, you had to print it and present it to your server/cashier. With the release of the iPhone app, you can now purchase and redeem the Groupon right on your phone!

After opening the app, you select your city and the daily deal will be shown. You can sign in with your existing Groupon login, create a new login, or sign in with Facebook Connect. Once signed in, you can see your existing Groupons and purchase new ones. When using a Groupon, your iPhone displays the same code that the printed out Groupon displays. The retailer just needs to verify your code and then you receive the value of the coupon.

I enjoy Groupon as it gives my wife and I a chance to visit different restaurants and save some cash. We don’t eat out a lot, but Groupon has provided good motivation for getting us to try different places. If you live in one of the cities with a Groupon site, I highly suggest you check them out.