This app calculates your precise daily calorie deficit needed for weight loss based on your personal stats and wearable data. It tracks your meals and calories burned against this target, adjusting automatically as you progress. It offers a data-driven approach to achieving your weight goals.
1.2
October 27, 2026
We made significant updates to the entire user experience!
Deficit uses real metabolic science, including TDEE and BMR, along with your personal stats and activity level from onboarding and wearables, to calculate your precise daily calorie target. This is not a generic guess.
Yes, Deficit automatically adjusts your daily calorie target as your weight changes. This ensures your target always aligns with your goal, providing continuous guidance.
Yes, Deficit integrates with wearables like Whoop and Apple Watch to pull data such as calories burned, heart rate, and recovery. It also offers two-way sync with Apple Health for weight, activity, and nutrition.
It pulls metrics like strain, recovery, and calories burned from Whoop, and workouts and heart rate from Apple Watch. Apple Health syncs weight, activity, and nutrition data.
Deficit is designed for both short-term goals, like losing weight for an event, and long-term weight management. It provides a consistent system to hit your target, whether you need to lose 10 lbs or 50 lbs.
No, Deficit is ad-free, allowing for an uninterrupted user experience focused on your weight loss journey.
Deficit has an age rating of 4+, making it suitable for a wide range of users interested in managing their weight.
The latest version of Deficit is 1.1, and it was last updated on June 10, 2026. Updates typically bring improvements and new features.
