If we asked you to picture what 200 calories of popcorn or raisins looks like, could you do it? Yeah, didn't think so. That's why a new app called Calorific ($2.99) is so genius: Since translating the calorie info on a nutrition label can be so difficult, two men living in London decided to weigh, style, and photograph 200 calories' worth of more than 140 different foods and drinks—and put them all in the app. Granted, the calorie information comes from a combination of Fatsecret.com, Google nutrition search, and the products' own nutrition labels (we usually try to stick with info from the USDA Nutrient Database since it's the most legit). And calories definitely aren't the only nutrition info that matters—but it's still interesting to see the pictures. Click through to see 10 from the app's database—you might be surprised which foods are the most (and least) calorie-dense.
Photo courtesy of Calorific
Spinach

Photo courtesy of Calorific
Peanut Butter

Photo courtesy of Calorific
Chickpeas

Photo courtesy of Calorific
Blueberry Muffin

Photo courtesy of Calorific
Potatoes

Photo courtesy of Calorific
Shrimp

Photo courtesy of Calorific
Raisins

Photo courtesy of Calorific
Salmon

Photo courtesy of Calorific
Red Peppers

Photo courtesy of Calorific
This article originally ran on Womenshealth.com.