Apple’s iOS App Store is approaching its 25 billionth app download, the company announced today. In celebration of the milestone, they’ve announced a contest. The person who downloads the 25 billionth app will win a $10,000 gift card to the App Store (not, unfortunately, to the Apple Store). Of course, the gift card will also work on music purchases and purchases in the iBookstore.

If you don’t feel like downloading an app for your chance to win, never fear. Apple’s contest page includes a link to an official entry form, where you can enter the contest “without purchase or download.” Of course, there is a bit of a catch. You can’t just fill out a form today and maybe win tomorrow (or in a week, or a month, or whenever that big counter finally clicks over to 25 billion). According to the official rules, a winning entry form must be submitted immediately following the download of the 24,999,999,999th app. And, if you don’t want to enter by downloading an app or by submitting an online form, Apple has even set up a toll-free phone number you can call to submit an entry. Yes, really.

You might not want to rush out and start downloading right away, though. If the counter on Apple’s contest page is even close to being accurate, as of right now there are still 700 million downloads to go before somebody wins.

What would you do with $10,000 in App Store credit? Let us know in the comments.