How to cook everything
With the iPhone 4 updates, this amazing app lets you not only search the more than 2,000 recipes, but the images will have you drooling before you even get started in the kitchen. For $4.99, it's quite the steal because you'll likely use it every day, and the handy kitchen timer makes mistakes less likely.
The new and improved iPhone has been getting so much buzz mainly because of the iMovie app. This nifty entertainment app not only allows you to shoot your own 720p, HD video, but you can also edit it right on your phone. It's definitely the first app you'll be showing all your non-iPhone friends.
If you already use the iPhone Twitter app, you'll love this updated version. It runs in the background, so you can do other things while your tweet is sending, and thanks to the high-resolution Retina display, everything looks crisp and clear.
Want to know where everyone is all the time? Loopt is a social network tracking app that follows you and your friends so you always know each other's whereabouts. The upgrade? You no longer have to check in to each location -- with Loopt running in the background, it will track wherever you go.
Plan your workout routines, count calories, get exercise instructions and follow a diet plan with this app. The best part is that videos look amazing on the new iPhone 4.
At $4.99, TomTom is a bit expensive, but if you're an avid traveler, it's money well spent. The new TomTom app runs in the background behind other apps, so while you're busy with something else, you can still get directions to where you need to go.
Up next: 7 More great iPhone 4 apps >>