Deficit counts the calories you eat against the calories you burn, so you always know exactly where you stand.
Deficit does the math all day, automatically, from the meals you log and the activity your wearable records.
Deficit was designed by a board-certified gastroenterologist with expertise in nutrition, who saw that most calorie-counting apps leave too much to guesswork.
A calorie deficit is the most reliable way to lose weight. So he built a way to know how many calories you burn each day, so you stay informed at every step of your weight loss journey.
Deficit isn't designed for people with a history of eating disorders, during pregnancy or breastfeeding, or for anyone under 18 without a doctor's guidance.
Tell us where you want to go and how fast. Deficit turns it into a daily number and keeps you on it.
Get started freeTell us how much weight you want to lose.
Tell us how much you want to lose per week, and we'll tell you exactly how many calories to burn per day to get there.
Log the calories you eat and the calories you burn, all within the app. Your wearable fills in the activity automatically.
Watch your deficit update throughout the day so you stay on target. No guessing. Know how much you're burning every day.
Follow your progress week by week, with milestones and a projected date, as you close in on your goal.
Every calorie in and every calorie out, in one place.
One gauge shows whether you're in a deficit or a surplus right now, measured against the goal you set.
Log a meal in seconds. Take a photo of your plate, search for a food, or enter the calories yourself.
Active and resting calories from Apple Health, plus anything you add yourself, in one daily total.
One high day doesn't undo your progress. Compare calories in and out across the week and see how many days you hit your goal.
Pounds to go, milestones at 25, 50 and 75 percent, and a projected date based on your real progress.
A daily deficit goal built from your weight goal and pace.
A streak counter rewards logging day after day.
Badges for milestones, starting with your first meal.
Active and resting calories flow in from Apple Health automatically.
“Easy to use. Accurate comprehensive features.”
Can't find what you're looking for? Email support@deficitapp.com.
Yes. Deficit is free to download and use on iPhone, with no subscriptions or in-app purchases.
Deficit adds up your active calories (workouts and everyday movement) and resting calories (what your body burns at rest) from Apple Health, plus anything you add yourself, into one total for the day. Wearables that sync with Apple Health, like Apple Watch, are included automatically.
No. You can add calories burned yourself at any time. Connecting Apple Health or a wearable fills in your active and resting calories automatically, so you don't have to.
Apple Health and Apple Watch, plus any device that shares its activity with Apple Health, such as WHOOP and Oura. Direct WHOOP and Oura connections are coming soon.
Tell us how much weight you want to lose and how much you want to lose per week. Deficit turns that into a daily calorie deficit and shows you how many calories to burn each day to stay on pace.
Yes. We never sell your personal or health data and never use it for advertising. Read the details in our Privacy Policy.
Not yet. Deficit is available on iPhone and requires iOS 15.1 or later.
No. Deficit is a tracking tool for general wellness and is not a substitute for advice from your doctor. Talk to a healthcare professional before starting a diet or exercise program.
Deficit isn't designed for people with a history of eating disorders, people who are pregnant or breastfeeding, or anyone under 18 without a doctor's guidance. If you have a medical condition or take medication that affects your weight or appetite, check with your doctor first.
You can delete your account from the app's settings, or ask us to do it. See how to delete your account.
Email us at support@deficitapp.com and we'll get back to you.
We never sell your personal or health data, and we never use it for advertising.
Deficit