You may already know how to lose the weight. The hard part is making it stick. Boubool is a coach in your iPhone: it reads your numbers every day and helps you build three habits that hold — eat, move, sleep — one action at a time, without counting every calorie.
Nothing is charged during the trial · cancel in two taps · iPhone, with or without a watch
You have already lost this weight. Maybe several times over. The problem was never you: after a loss, the body pushes to put it back on. On Mounjaro, Ozempic or Wegovy, with type 2 diabetes, a liver to keep an eye on — or with no treatment at all. If your real question is “how do I keep it off?”, Boubool is built for you.
Weight, steps, sleep, workouts, heart rate: it all comes in from Apple Health. It doesn't matter where from: Apple Watch, Garmin, Withings, Polar, Fitbit, Oura, a connected scale — or the iPhone on its own. If your watch feeds Apple Health, Boubool reads it. You only enter what the phone cannot know: a protein meal, an injection, a drink.
No watch, no connected scale? Nothing gets blocked. The iPhone counts your steps; weight, waist, nights and workouts are entered by hand, in two taps, on a single screen. And the measurement that carries all the body tracking — your waist — is taken with a tape measure: on that one, a watch gives nobody a head start.
Three rings, one per habit: eat, move, sleep. The outer ring is the day; the inner one is the week. At a glance, you know where you stand.
Not a list. One sentence, calculated from your numbers for the day, doable tonight. Tomorrow it may be another one — whichever matters then.
Every day, Boubool looks at what your data say — your meals, your steps, your nights, your workouts — and tells you the one thing that matters now. With a tip to act on it, and never a reproach.
It compares your week with the one before: protein, steps, sleep, strength sessions. What is going up, what is going down — and what you can do about it.
Not a to-do list: the useful line at the right moment, and a concrete tip to put it into practice. When there is nothing to fix, it tells you that too.
After a walk, a run or a strength session, it tells you what went well — and when the next session of your plan is.
If your weight starts to creep back up, you know within the first weeks, without blame, with the habit to act on.
It adapts to your days too: a sensitive stomach or the day after an injection, and it lightens the day instead of insisting. A tip that doesn't fit you? “Stop telling me this” sets it aside.
Boubool, your coachbased on your numbersYour protein average went from 92 g to 108 g a day in one week.
Tip Spot the meal that made the difference, and keep it on the menu next week.
Boubool, your coachbased on your numbersYour sleep week was shorter: 6 h 25 per night, compared with 6 h 50 before. Nothing to make up, just the coming nights, one by one.
Boubool, your coachbased on your numbersStrength training session planned today. Twenty minutes is enough to tell your body to keep its muscle.
Tip Lay out your workout clothes now; the session gets started more easily.
Tracking apps pile up numbers until you give up. Boubool keeps to the essentials: three simple habits, held week after week — because those are the ones people actually keep. One off day breaks nothing.
Build your plate from simple foods: a protein source, some vegetables. Two rings show where your day's protein and fibre stand — protein helps preserve muscle during weight loss — and Boubool tells you what balances the meal. No weighing, no counting.
A muscle that gets used is a muscle the body keeps. Strength sessions, steps every day — and rest, because muscle is built at rest.
A night that is too short can raise hunger and make the next day's choices harder. Boubool looks at the trend over two weeks — never a single night, and never a lecture when you wake up.
Muscle burns energy even at rest. When these three habits hold, you give your body better conditions to keep the weight you have lost off for good.
The Metabolism tab puts them side by side: it is how they move together that tells you what is really leaving.
After weight loss, the body tends to save more energy and appetite can rise. If muscle was lost along the way, holding the new weight becomes harder still. Boubool protects what matters while you are losing: your strength, your habits, and a plan for what comes next.
The pattern many people live through: you lose, you gain it back — a little higher each time. What Boubool changes is not the way down: it is what comes after.
Boubool adapts the tracking to your situation — and never gives advice about a dose, a treatment or stopping one: that belongs to your doctor.
Injection reminders, a body map where you note the spot you used, side effects you feel, the D+1 to D+7 cycle. And above all, what comes after: when the treatment stops, appetite returns — Boubool prepares for that day. Stabilization phases, hunger tracking, regain alert.
Blood glucose and HbA1c logged, clear curves, your blood tests imported from PDF. Never any interpretation: your doctor interprets, the app keeps the record — clean, dated, ready for the appointment.
ALT, GGT and triglycerides as trends. Alcohol logged without judgment. And the −7 % mark: it sits within the 7–10 % range that the European liver guidelines (EASL) aim for to act on inflammation. Boubool simply tells you where you stand against it — your doctor draws the conclusions.
The same app, all of it. Three habits, a coach, the guard against the regain — because a body that has lost weight wants it back, treatment or not.
Boubool creates no account and sends your data to no Boubool server: it stays on your iPhone and inside your Apple Health environment. We technically cannot sell it. An export goes only to the recipients you choose. Your doctor, for example.
Built by someone who uses the method — not by an ad network. His story ›
The whole app, nothing held back, long enough to live two real weeks with it. Then you decide, knowing what you're getting.
The 14-day trial is included in the yearly plan: €24.99 billed once a year, that is €2.08 a month. Unless you cancel at least 24 hours before the trial ends, the subscription starts automatically. No advertising, no hidden options.
For twenty years, my family called me “Tonton Bouboul” — Uncle Bouboul. An affectionate nickname, until it ended up naming a real problem: fatty liver disease with fibrosis, then diabetes.
Father of two little girls I want to watch grow up for a long time, I built the companion I needed: simple, kind, centred on three habits — eat, move, sleep.
And I took the nickname back. Boubool: the name of the problem, turned into the name of the solution.
Benoît — founder of Boubool, and the method's first user
Boubool reads every watch that feeds Apple Health: Garmin, Withings, Polar, Fitbit, Oura, Suunto… Your steps, your nights and your workouts come through, whatever the brand.
And if you wear an Apple Watch, you also get the app on your wrist: your three rings and your trajectory at a glance, filled from the iPhone — nothing to enter on the watch.
And with no device at all — no watch, no connected scale — the app stays whole. One entry card gathers everything there is to note, in two taps. You lose neither the rings, nor the coach, nor the trajectory.
Fourteen days of free trial, the whole app. Nothing is charged before the trial ends, and you can cancel the subscription at any time from your Apple account.
iPhone, iOS 17 or later. No watch needed: the iPhone counts your steps, and everything else is entered in two taps.
Boubool