If you’ve been living under a giant iPod Touch (no, it’s not an iPad dude) for the past 3 months, then you don’t know that iOS 4 supports multitasking and tasks in the background. Yes, apps can now finish tasks while not visible - they’re paused to you, but they can finish their job in the background.

For this reason, and because we love showcasing new apps, apps like GPS Tracks are now possible. And if that’s not enough, we even have 3 promo codes up for grabs.

GPS Tracks is able to track your location in the background and save logs for you. You have this Google Map, you can start a new tracking, then close the app and forget about it. It will keep on monitoring your location until you tell it to stop. You can add waypoints as you go, save logs as GPX files (and then email them to a friend), track your elevation on iPhone 3GS and 4.

The app is really nice (so is the icon) and works just as advertised. It’s pretty cool to leave it open and see how much you’ve been moving during the day. It’s available at $1.99 in the App Store, but you can get the chance to win one of 3 promo codes we have. Just leave a comment below.

Good luck!