The iPad Air went on sale today in more than 40 countries all over the world, and supplies are starting to dry up, with higher capacity models being the most affected. If you’re heading to your nearby Apple Store to buy the iPad Air, here’s a way you can get to know if the store has enough stock.

Simply visit apple-tracker.com/ipad-air, and enter your zip code, to get a list of all your nearby Apple Stores, and corresponding availability for each iPad Air model. You can even select iPad Air color, and carrier, in case you plan on buying the Cellular model.

So if you’re planning to buy the new iPad, visit the Apple Tracker website and let us know how it goes in the comments.