Leftover Swap: Launched in August (so still relatively new), Leftover Swap lets you do just that: swap leftovers. Have leftover food? Take a picture and post it on the app. Other users can then either barter for your leftovers, take them off your hands for free or offer up a donation for anything particularly tasty-looking. The founders aren't sure how to make money yet and the San Francisco Health Department has already raised concerns. Selling food requires a permit and selling leftover food is a health department no-no. But, the goal is to help eliminate some of the huge amount of food that is wasted every year. Available in the Apple app store.

FoodieQuest lets you pit your food photos against your friends' food photos and earn votes. Photo: FoodieQuest

FoodieQuest and Epicurator: Taking pictures of your food is so last year, so over. These two apps want to make photography of your meals cool again -- and more fun. FoodieQuest, which was supposed to launch out of beta in December but is still in the works, has made food photos a game. Compete against friends with your photos, earn votes or search by city. Epicurator launched at the end of the summer and is a cross between Yelp and Instagram. Post pictures of your food and rate the meal from "Bleh" to "Foodgasm." It's basically a digital way to say, "I'll have what she's having." FoodieQuest is coming soon to the Apple app store. Epicurator is available on the Apple app store.

TellSpec: One of the craziest and, if it works, most exciting technologies (and sort of an app) that could come out this year uses a small laser to scan your food and then uploads all the nutritional data about what you're eating to an app on your smartphone. TellSpec showed off a beta version at the Consumer Electronics Show last week and plans to go to beta testers in April. The goal is for the laser, essentially a raman spectrometer, to measure the composition of what you're eating and give you detailed information about the ingredients -- even those not listed on the label -- and more in-depth nutritional information. As more people use the scanner and app, the database of foods will grow. Right now, the company is using the $380,000 it raised on IndieGoGo and the $1 million it just received in seed money to make the scanner more lightweight and useable and to fine-tune the app.

These are certainly not all the food apps available or even all the new ones. Please share your favorite food apps in the comments.

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