EAT TO EMPTY // MOVE TO CHARGE
FOOD IS HALF YOUR HEALTH.
SEE THE OTHER HALF.
DEFICIT tracks your calories and macros, then reads them against your weight, sleep, heart and recovery. One screen, no guesswork, no ads.
IPHONE · WORKS WITH APPLE HEALTH · 3-DAY FREE TRIAL · CANCEL ANYTIME
THE OTHER HALF // FOUR SIGNALS, ONE SCREEN
MOST APPS STOP AT THE FOOD LOG.
Calories are the input. Whether they're working shows up in everything else your body does. DEFICIT reads all four together.
01 / NUTRITION
Calories and macros, logged in seconds by photo, voice or barcode. The foundation everything else reads against.
02 / BODY
Your weight, smoothed past the daily water swings, with the real maintenance the data says you have, not a calculator's guess.
03 / RECOVERY
Sleep, resting heart rate and HRV from Apple Health, plus bloodwork like body fat and HbA1c, on the same timeline as your food.
04 / COACH
Reads the last two weeks across all of it and answers from your numbers: why the scale moved, what to change.
01 / NUTRITION // THE FOUNDATION
LOG A MEAL IN SECONDS.
Searching a food database is the chore that kills every tracking streak. DEFICIT skips it. Point, speak or scan a barcode, and the macros land.
POINT
Open the camera and point it at the plate. Home cooking, restaurant plates and leftovers all count.
SCAN
AI reads the meal and breaks out calories, protein, carbs and fat in seconds.
KNOW
One tap confirms it and the number lands against your daily limit. Voice, text and barcode work too.
02 / BODY // MEASURED, NOT GUESSED
YOUR WEIGHT, AND WHY
IT'S MOVING.
Daily weigh-ins are noise: water, salt, sleep. DEFICIT smooths them into a trend you can trust, measures the maintenance your own data actually shows, and reads it alongside your sleep, heart and recovery so the whole picture lines up, or tells you why it doesn't.
SMOOTHED WEIGHT
The trend line cuts through the daily bounce so a real loss reads as a slope, not a scare.
MEASURED MAINTENANCE
After 14 days your true burn is calculated from your intake and weight, and the limit auto-corrects to you.
DATA SUITE
Bring lean mass, body fat and bloodwork like HbA1c onto the same timeline. We explain each marker; your GP reads the person.
04 / COACH
ROLLING OUTA COACH THAT READS
ALL OF IT.
Ask why the scale jumped on Monday. Coach pulls your last two weeks of intake, weight, sleep and steps, finds what actually correlates, and answers from your numbers, not a generic article. It proposes changes at your weekly check-in and never applies anything behind your back.
AD-FREE. UNBOUGHT.
AD-FREE
Every tier, permanently. The subscription is the business model, so you are the customer rather than the product.
RED MEANS SURPLUS
Colour only appears when you are actually above maintenance. A number is a data point about the day, never a verdict on you.
MEASURED, NOT GUESSED
Your budget starts sedentary and movement is credited back from your watch. A self-rated activity multiplier is the oldest lie in tracking.
YOUR DATA
Synced to your account so your phone, your widget and the suite read the same truth. Sold to no one and advertised against never.
THE WEB HEALTH SUITE
COMING SOONYOUR PHONE CAPTURES THE DAY.
THE DESK READS THE SEASON.
Coming soon, and included with Pro when it ships: a full desktop suite covering energy, body, recovery, coach and library, on charts sized for a monitor instead of a thumb. Same account as the app.
ENERGY
14D KCAL VS MAINTENANCE
BODY
SMOOTHED + 6W FORECAST
RECOVERY
VS YOUR 28-DAY BASELINE
PRICING // SIMPLE
DEFICIT PRO.
PRO MONTHLY
£3.99
/month · cancel anytime
- ✓Void Bar: the 3-state mechanic
- ✓Charge: measured activity credit
- ✓AI scan, voice and barcode
- ✓Adaptive TDEE
- ✓Ad-free
PRO ANNUAL
BEST VALUE£27.99
/year · saves 42% vs monthly
- ✓AI food scan with full macros
- ✓Barcode scanning
- ✓Adaptive TDEE
- ✓Coach (rolling out)
- ✓Data Suite: bloodwork + recovery (rolling out)
- ✓Web Health Suite (coming soon, included when it ships)
- ✓Unlimited history + insights
GB APP STORE PRICES · YOUR STORE CONFIRMS AT PURCHASE · NO INCREASES FOR EXISTING SUBSCRIBERS · LIFETIME IS PERMANENT