Private beta — by invitation

Point. Shoot. Tracked.

Log any meal from a photo in seconds. Your AI coach tracks eighteen nutrients, training, weight and fasting on the timescale your body actually works — and adapts your plan every week from what you actually burn.

Invitation-only. We review every request.

How it works

Three steps between you and a plan that actually adapts.

  1. 01

    Snap your meal

    Take a photo, paste one, or just describe the dish — nutrition labels are read automatically. Calories, macros and fourteen more nutrients, logged in seconds.

  2. 02

    Talk to your coach

    A conversation, not a form. Your coach interviews you — goal, body, activity — and computes evidence-based targets you accept or adjust with a tap.

  3. 03

    Watch it adapt

    Weight, adherence and training feed back into your plan. Trained today? Targets rise automatically. And every week your coach reads your weight trend — not a single weigh-in — and moves your targets off what your body is measurably burning.

Your body doesn't reset at midnight

The idea MacroLume is built on: every nutrient is judged on the timescale your physiology actually works on. Some need daily attention. Most average out over the week — and pretending otherwise is why trackers make you feel guilty.

Judged daily
What today decides
  • Protein

    There is no amino-acid store. Your body needs enough every single day — the daily total is what the evidence supports; spreading it across meals is a nice habit, not a rule to obey.

  • Water

    Hydration is a same-day affair — yesterday's two liters don't help you today.

  • Carbs & fat

    Today's fuelling for today's training and recovery.

  • Caffeine

    Acute by nature: a per-day ceiling for sleep and anxiety that can't be averaged away.

08:30
14:00
21:00

Daily protein total — hit across the day

Judged over ~7 days
What the week decides
  • Calories

    Weight change follows the weekly energy balance. One high day inside an on-track week changes nothing.

  • Fiber, sugar & saturated fat

    Habit-level markers — a birthday cake is data, not a verdict.

  • Salt & potassium

    Your body buffers them; your average over the last few days is what matters — the same goes for calcium, iron, magnesium and the rest of the micronutrient flags.

  • Alcohol

    Health guidance is weekly by design — so that's how it's judged.

Birthday dinner7-day average: on target
Adherence beats perfection
Overshoot a target and the coach suggests a realistic adjustment for the rest of the day. The plan that works is the one you can actually follow.
No moralizing about food
No good foods, no bad foods, no red screens, no guilt. Numbers, context, and the next reasonable step.
Plateaus, explained
Instead of judging a single day, the coach reads your weekly balance: "you're about 200 kcal under on average — you're on track."

One system. Every signal.

Nutrition, training, weight, hydration and fasting — tracked together, because your body doesn't work in silos.

Four ways to log
Point your camera at the plate, paste a photo, describe the dish in words, or tell your coach in chat. Nutrition labels are read automatically — and anything can be corrected with a quick reply.
  • Protein128 g
  • Carbs146 g
  • Fat38 g
A coach that acts, not just chats
One message — "coffee, salad, a 30-minute run, I weigh 86" — becomes four log entries. Your coach logs, corrects and deletes anything you could do by hand, and searches the web for restaurant or branded items.
I want to drop fat but keep strength. 3 gym sessions a week.
Got it. Moderate deficit: 2,150 kcal, 165 g protein. I'll review your targets every Sunday with your weight trend.
It learns what you actually burn
Every other app asks you to pick an activity level from a dropdown and then trusts that guess forever. MacroLume reconciles what you logged against your weight trend to solve your real expenditure — so a bad guess, or a metabolism that adapted mid-diet, gets corrected by your own results instead of standing for months.
Weight trend
Daily scale weight swings ±1-2 kg on water alone, so we never ask you to read it. An exponentially weighted trend runs through the noise, and that trend — not this morning's number — is what your rate of change and your weekly targets are built on.

81.6 kg

Eighteen nutrients, not four
Beyond calories and macros: fiber, sugar, saturated fat, salt, alcohol, caffeine, potassium and calcium — each with its own evidence-based target, goal or limit. Iron, magnesium, vitamin D, B12 and omega-3 come too, as honest directional flags: enough to spot a diet with no fish for a fortnight, never sold as lab precision.
Fiber29 g
Sugar38 g
Sat fat17 g
Salt4 g
Caffeine180 mg
Potassium3400 mg

Rolling 7-day averages

Quality, not just quantity
Two identical macro days can be very different diets. A Mediterranean-style score reads the food groups you actually ate — vegetables, legumes, fish, olive oil — and names the one that would help most. No ultra-processed labels, no banned foods, no lectures: adding beats forbidding.
Advice before you ask
Your coach studies your activity in the background: personal tips on your dashboard every morning, and a heads-up in time to fix the day when your protein or water is about to fall short — as a push notification when it matters.
Training that moves your targets
Log workouts from a photo of your watch, a sentence or a form. On training days your calorie, carb and water targets rise automatically — health limits stay put.
Weekly training volume312 min
Intermittent fasting, optional
A live fasting clock against your 16:8-style goal. Water and black coffee don't break it. The coach treats fasting as a tool for adherence — never a religion.
Fasting now0:00of 16 h
The scale isn't the whole story
Sleep changes what you lose, not just how much — short nights in a deficit push the loss toward muscle. Waist catches the fat the scale misses when weight sits still. And for women, optional cycle awareness names the water your luteal phase holds, so a normal 1 kg bump stops reading as failure.
A coach that remembers
Allergies, injuries, schedule, the foods you hate — durable facts survive every conversation and shape every recommendation.
Make it yours
Units, number format, your country and typical cuisines (so photo estimates read your plates right), and a quick-add menu you design: one-tap buttons for your daily americano or your usual swim, estimated once by AI. Set it up yourself or just ask your coach.
Hydration
One tap logs 250 ml to a liter. Targets scale at 35 ml per kg of body weight — and rise when you train.
Water1.6 / 2.5 L
Progress you can see
Weight, calories, macros, training volume and fasting over 14, 30 or 90 days — with streaks, adherence stats and achievements that reward consistency, not perfection.
12-day streak86% days on target
Progress, shared
Invite someone you trust to follow along — you choose which metrics they see and whether they can open your day, read-only. Compare your charts side by side as % of each person's own goal, so different targets still compare fairly.
Your steps count too
On iPhone, install the pre-built shortcut once and your Apple Health steps sync with one tap — or on their own with a daily automation. Walk more than your usual and the extra burn raises that day's calorie target and feeds your weekly energy balance — no double counting, no manual logging.
steps today9,412
Installs like an app
Add it to your home screen and it opens straight into today's dashboard — signed in, in English or Spanish, light or dark.

The evidence behind every number

Your targets aren't invented and they aren't averages of other people's — they're computed from your body data with published equations and public-health guidance, and they recalculate the moment anything changes.

Measured, not guessed

Energy expenditure

After about 17 days of logging and weigh-ins, your maintenance is back-solved from your own intake and weight trend — the equation run backwards. No dropdown decides it.

Energy balance, in reverse
±1–2 kg

Trend weight

That's how much daily scale weight swings on water, glycogen and gut contents alone. An exponentially weighted average runs through the noise, and only the trend is ever acted on.

Hacker's Diet method
Mifflin-St Jeor

Basal metabolism

The best-validated BMR equation in healthy adults — but only as your starting estimate. Once you've logged for about three weeks it steps aside for what your body measurably burns.

Mifflin et al., 1990 — the starting point
0.5–1% BW/week

Rate of change

Capped as a share of your bodyweight, because a flat 1.5 kg/week is 2.7% of a 55 kg body and 1.2% of a 130 kg one. Losing faster costs muscle, not time.

Loss 0.25–1% · gain 0.1–0.5%
1,200 / 1,500 kcal

Floors you can't cross

Absolute energy floors for women and men, a fat floor at 15% of calories, and protein that never drops below 1.2 g/kg. Ask for something more aggressive and you'll get the safe number instead.

Not negotiable, by design
1.6–2.0 g/kg

Protein

Scaled to your goal — highest when cutting, to protect muscle. The daily total is what the evidence actually supports, so nothing here is gated on meal timing.

ISSN position stand
≥ 15% of kcal

Fat

A floor for hormonal health — 15% of your energy and never under 40 g — reached toward 0.8 g/kg when the budget allows. Carbohydrate takes what's left.

A floor, not a cap
35 ml/kg

Water

Scaled to body weight, plus ~350 ml for every 30 minutes of training.

Same-day goal
14 g / 1,000 kcal

Fiber

Scales with how much you actually eat, not a one-size-fits-all number.

IOM / AND
< 10% kcal

Free sugar

Judged as a 7-day average, so one dessert is data — not a failure.

WHO
< 10% kcal

Saturated fat

A weekly habit marker, tracked alongside — not instead of — total fat.

WHO
≤ 5 g/day

Salt

Evaluated over the rolling week; one salty dinner doesn't fail anything.

WHO
≤ 400 mg/day

Caffeine

An acute per-day ceiling for sleep and anxiety — the one limit that's never averaged.

EFSA
≤ 14 units/week

Alcohol

Tracked in grams of pure alcohol against a weekly guideline, the way the guideline was written.

UK Chief Medical Officers
≥ 3,510 mg/day

Potassium

The forgotten electrolyte — most people fall short, so it's tracked as a weekly goal.

WHO
~1,000 mg/day

Calcium

Bone health is built on the habit, not on any single day — tracked as a weekly goal.

EFSA / NIH
5 flags

Micronutrients

Iron, magnesium, vitamin D, B12 and omega-3, tracked as directional flags — enough to notice a fortnight without fish. A photo can't know soil or cultivar, so we don't pretend it can.

EFSA references · directional only
0–100

Diet quality

Scored on food groups, the way Mediterranean adherence is measured — the dietary pattern most consistently tied to lower mortality. Deliberately not an ultra-processed score: that label is too blunt to be fair.

Mediterranean / HEI-style

It corrects itself, weekly

A formula is a guess that never gets checked. Every week your logged intake is reconciled against your weight trend to solve what you actually burn — and your targets follow that, smoothed, with no settings page to remember.

Training days are different

Burned calories flow back into your day, split 50% carbs, 25% protein, 25% fat — because recovery has its own arithmetic. Health limits never loosen.

MacroLume is not a medical device and your coach is not a doctor. For medical conditions, eating disorders or extreme goals it recommends a professional and stays conservative — by design.

Questions

Built on trust

No data selling. No ads. No dark patterns. Health data deserves better defaults — that's a founding principle, not a feature.