App Shows What 200 Calories of Holiday Treats Look Like Find out how much mulled wine equals 200 calories.

 -- This season there's plenty of holiday cheer, but also holiday treats and goodies that can wreak havoc on any diet.

To help those trying to stay healthy while enjoying seasonal treats, the app Calorific has created a handy guide that shows what 200 calories of holiday treats look like. The weight-loss app displays pictures of a single food in the amount that would equal 200 calories.

Apparently it takes a whole plate of Brussels sprouts to equal 200 calories, but just a single glass of mulled wine.

"We saw some apps that showed how many calories are in a meal but we thought it would be useful to show the individual foods," Nic Mulvaney, the British graphic designer who designed the app, told ABC News in a November interview.

The app is free with 30 images preloaded to but to unlock all the holiday-themed foods, you’ve got to pay $2.99.

ABC News’ Liz Neporent contributed to this story.