EnergyBalance

For iPhone and Apple Watch

Know it's working.

You log the food, the weigh-ins and the workouts. EnergyBalance turns them into how much you can eat today, and shows whether your cut or bulk is on track.

Keep the food app you use now: EnergyBalance reads it from Apple Health.

Coming soon to the App Store

The Goals screen: 615 kcal remaining today out of a 2,644 budget, with macro minimums below
A workout in progress: a rest timer, the next set of Incline DB Press, and the sets already logged

Every day

How much you can still eat today

Log the day's meals in the morning and you know the least you'll have left for dinner. Every walk and workout makes dinner bigger.

Remaining today: 615 kcal. 2,029 eaten of a 2,644 budget. Target: 300 kcal deficit. 1 2 3
  1. 1What's left todayWhat you can still eat today and stay on target.
  2. 2A budget that movesYour resting burn is the fixed part, there from the morning. Walking and training add to it, and EnergyBalance checks that against your scale.
  3. 3Your targetA daily deficit to cut, or a surplus to bulk. You set it.
Past: down 2.0 lb in 30 days. Future: cut to Nov 29, 2026.

And whether it's working

What your weight actually did, and when you reach your goal at this pace.
The Net screen: an average daily deficit of 319 kcal over a month, with a bar for each day
NetSurplus or deficit, by day and over time.
The Outcomes screen: weight down 2.0 lb in a month on its trend, body fat from 18.0 to 17.4%, and 75% of what was lost was fat
OutcomesWeight and body fat, set against your balance.

Lift

Your training counts

Log every set on your iPhone or Apple Watch. Each workout is saved to Apple Health and counts toward the day's burn, so a training day leaves you more to eat.

Lifting lives under your burn

Start a routine right under the day's burn. A workout in progress stays with you on every screen, tucked into a bar above the tabs, and the calories it burns join the day as you train.

The Burn screen with the lift tracker under the day's burn, and a workout in progress tucked into a bar above the tabs

Bring your history from Hevy

I logged my lifts in Hevy for years. It records a dumbbell weight as the weight of one dumbbell, and like a lot of people, I didn't always log it that way. Some exercises switched partway through my history, and I found I'd logged my incline dumbbell curls with both dumbbells' weight for years. I wanted my whole history to read right, so I made sure EnergyBalance could put it straight.

Mike, who makes EnergyBalance

Bring your Hevy export over, and EnergyBalance finds where your dumbbell weights switched between one dumbbell and both. Say which each stretch was, and your history reads right, so your graphs and targets do too.

The Dumbbell weights screen: for Incline DB Press and Lateral Raise, each stretch of history is marked Each or Both, with a suggested change where the weights doubled or halved.

Built for how you train

Targets that follow the weight

Change the weight and the rep target keeps last time's weight × reps: 45 lb for 40 becomes 50 lb for 36.

The set to do: DB Calf Raise, last time 45 lb each for 40 reps. The weight is changed to 50 lb each and the reps read 36.

One side at a time

Log each side on its own, with a timer to switch sides.

Bulgarian Split Squat, set 2 of 3: the left side done, a 58-second switch timer running, and the right side up next.

Turn your phone on its side

The set you're on stays on the left, the whole workout on the right.

A phone turned on its side mid-workout: on the left the set to do, Bulgarian Split Squat, right side next with the switch timer running and Done at the bottom; on the right the list of exercises and sets.

On your Lock Screen

Change the weight and reps, add to your rest or skip it, and log the set, all without unlocking your phone. Your Watch keeps up.

The workout on the Lock Screen: Chest and Triceps resting, 1:58 left; next, Incline DB Press set 3 of 3 at 45 lb each for 15 reps, each with minus and plus buttons; and buttons to add 30 seconds or skip the rest.
The Lift screen: three routines, each with a Start button
RoutinesBuild your own, or start an empty workout.
A workout in progress
In the gymA rest timer, last time's numbers, one tap for each set.
Lift history: this week's totals, a map of the muscles worked, and past workouts
HistoryEvery workout, and a map of the muscles you worked this week.
An exercise page for Incline DB Press: a picture of the movement and how to do it
Every exercisePictures, how to do it, and a graph of your progress.

Your phone and Apple Watch stay in step during a workout.

How it works

Why you can trust the numbers

Every number comes from what you already track, and EnergyBalance checks itself against your scale.

It reads your tracking. It doesn't replace it.

Keep logging in the food app you use now. EnergyBalance reads your food, weight and activity from Apple Health. It is not a food logger, a step counter or a diet plan.

Food app
Scale · WatchApple
HealthEnergy
Balance

The Intake screen: 2,029 kcal eaten today, split into protein, carbs and fat
What your food app logged, as EnergyBalance shows it.

Your burn, built from four parts

No mystery number. Each part comes from your own data, and you can see every one. It moves through the day: walk more or train, and what you can eat goes up.

BMR
At rest. From your weight, height, age and sex.
NEAT
Daily movement. From your steps outside workouts.
TEF
Digestion. From the protein, carbs and fat you log.
EAT
Workouts. From what your Watch records.
The Burn screen: 2,944 kcal burned today, made of BMR 2,004, NEAT 221, TEF 384 and EAT 335

It checks itself against your scale

A model is only worth planning with if it predicts what happens. Over weeks, EnergyBalance compares the weight change its numbers predict with what your scale shows.

When they drift apart it names a correction, one cause at a time, and you decide whether to apply it. Nothing is adjusted behind your back.

From the first day you get your burn, your budget and your balance. Calibration needs about 12 weeks of food logs and weigh-ins; if Apple Health already holds them, the app brings that history in when you first sign in, so calibration works from day one.

  1. 1It measures the gap
    Average daily burn: 2,960 kcal from food log and scale, 2,810 from the model, so the model is under by 150 kcal a day
  2. 2It names a correction
    BMR coefficient: current 1.0, suggested 1.07
  3. 3It shows whether that predicts better
    Predicting four weeks ahead: off by 2.0 lb with the model in force, 1.5 lb with corrections

Made for people who already track

If you don't log food, Energy has little to work with.

  • A food app that writes to Apple Health
  • Regular weigh-ins, from a smart scale or typed in
  • An Apple Watch helps, for workouts

Use one, or both

Each one is a whole app. Subscribe to what you'll use, and switch later if that changes.

Energy

Burn, balance, goals and calibration, from your Apple Health data. Workouts from any app that saves them there count.

Needs a food app and weigh-ins in Apple Health.

Lift

The lift tracker, on iPhone and Apple Watch.

Needs nothing else.

Energy + Lift

Everything in both, as one app: the lift tracker sits under the day's burn, and every lift counts toward what you can eat.

Needs what Energy needs.

Subscriptions are through the App Store. Prices will be here at launch.

Questions

Do I need an Apple Watch?

No. Lift works on an iPhone alone. For Energy, a Watch makes the workout part of your burn much better, but food, weight and steps are enough to start.

Which food apps work?

Any app that writes calories and macros to Apple Health. Check that sharing with Apple Health is turned on in the app you use.

Where does my data go?

The Health data you allow is synced to your EnergyBalance account, so the model can run and your history follows you to a new phone. It is never sold and never used for advertising. Privacy policy.

Does my budget go up when I train?

Yes, and that is the point: a budget that follows what you actually do. Watches can overstate workouts, so EnergyBalance checks its numbers against your scale, and calibration can turn workout calories down. If you would rather eat the same every day, you don't need EnergyBalance.

Is there an Android version?

No. EnergyBalance is built on Apple Health.

The screens on this page show sample figures, not a real person's.