Most calorie apps use crowdsourced data, not lab-tested numbers. I checked the USDA database and found errors of 20 percent on even common foods. https://hackernoon.com/i-checked-what-data-source-my-calorie-app-uses-you-should-too #calorietracker
I Checked What Data Source My Calorie App Uses. You Should Too. | HackerNoon

Most calorie apps use crowdsourced data, not lab-tested numbers. I checked the USDA database and found errors of 20 percent on even common foods.