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Strength training app for iPhoneComing early November 2026

Your workout, your plate, your supplements. One app.

Lesto logs your sets in one tap, lights up the muscles you worked in 3D, tracks your meals and supplements, and its AI coach understands what you tell it. No account, your data stays on your iPhone.

Notify me at launch See the app in action

Pre-orders on the App Store open in mid-October: the link will show up here. Until then, just send an email and we’ll let you know.

330
exercises animated in 3D
3,484
foods from the Ciqual table, works offline
1
tap to log a set
0
accounts to create, no ads

330 animated exercises. The working muscle lights up.

Every exercise in Lesto has its own 3D demo on a real anatomical body. The main muscle glows red at the moment of effort, the secondary muscles more softly: you see what you should feel before you lift.

  • Barbell bench press
  • Barbell back squat
  • Deadlift
  • Pull-ups
  • Standing overhead press
  • Barbell hip thrust
  • Bent-over barbell row
  • Dumbbell lateral raise
  • Barbell biceps curl
  • Rope triceps pushdown
  • Romanian deadlift
  • Bulgarian split squat
  • Wide-grip lat pulldown
  • Cable crossover
  • Leg press
  • Standing machine calf raise
  • Chest dips
  • Face pull
  • Hanging leg raise
  • Kettlebell swing
  • Push-ups
  • Seated cable row
  • Front squat

Three apps in one. Plus a coach.

Your training log, your nutrition tracker and your supplements, in one place and connected. What you eat and what you take sit right next to what you lift, and the AI coach ties it all together.

Workouts

Weight and reps pre-filled from your last workout, a set logged in one tap, personal records detected automatically, programs week after week.

3D Body

Every set counts toward the muscles it works. Your week shows up on a 3D body, and every exercise plays its animation before you do it.

Nutrition

The Ciqual food composition table (French agency Anses) offline, barcode scanning, spoken meals, meal plans and what you have left to eat today.

Supplements

Creatine, whey, omega-3: a reminder at the right time, a dose checked off in one tap, and fact-based guides, no miracle promises.

AI Coach

Describe your workout or your meal like a text message, and it prepares the entry. Ask it for a workout, and it builds one with your weights.

Workout

Your whole workout on one screen. No scrolling.

Between sets, you don’t have time to hunt around. Lesto shows what matters at a glance and keeps your thumb on the only button that counts.

  1. One tap per set

    At the top, your progress, the exercise, its photo and your rest. Below, all your sets with the weight and reps from last time. Adjust with a tap, log it with the yellow button, and the rest timer starts on its own.

    • Weight and reps pre-filled
    • Warm-up calculated, personal records detected
    • Eight sets visible without scrolling
    Workout in progress, barbell bench press: progress bar, eight sets visible, set 2 active at 77.5 kg × 10 and the “Log set 2” button at the bottom.

  2. Your program, your way

    Your program week, planned and completed workouts, ready-made programs based on your days and your level. You always know where you stand: week 10 of 12.

    • Programs from 2 to 6 days
    • Program generator (Premium)
    Programs screen: the active Upper/Lower 4-day program in week 10 of 12, completed programs and ready-made programs filtered by number of days.

  3. Make changes, nothing breaks

    Rename a workout, duplicate it, move it within the week or delete it. Lesto swaps days cleanly and keeps your history intact.

    Workout menu: Rename, Duplicate, Move within the week, Delete workout.

  4. Every exercise, adjustable

    Sets, rep range, rest and weight are set per exercise. Not feeling an exercise? Swap it for an equivalent that targets the same muscles.

    Upper A workout expanded on the bench press: settings for sets, reps 7-11, rest 2:45 and weight 82.5 kg, with the Auto weight and Replace buttons.

Workout complete

Your finished workout, center stage.

Fifteen seconds to see what you just did: total volume, muscles lighting up one by one, personal records falling, recovery, and your week moving forward. Understated, no confetti, and “Skip” always in view.

8 personal records broken: barbell hip thrust 119.5 → 122.5 kg, leg press 5,400 → 5,425 kg of volume, seated calf raise 63 → 70 kg.
Calendar: 24 weeks in a row, best streak, one wildcard available for a missed week, and the month of October with completed workouts underlined.
Alex’s profile: athlete card with 85 kg bench press, 105 kg squat, 130 kg deadlift, 24 weeks in a row and 12 of 15 badges.
  • Weekly streaks, not daily ones. Hit your weekly workout goal and the streak keeps going. One wildcard a month covers a missed week.
  • Records that matter. Estimated 1RM, more reps at a given weight, biggest volume, first round numbers: 100 kg deserves a celebration.
  • Badges for real milestones. 10, 50, then 100 workouts, first full month, 100 tonnes lifted in total. About fifteen of them, not a pile of gimmicks.

3D Body

See where the work really goes.

Every set counts toward the muscles it works. Your week shows up on a 3D body: tap a muscle to see its sets, its recovery and the exercises that target it.

330
animated exercises, with coaching cues
4
weeks of consistency shown on your body
17+
sets per week for the deepest red
  • The main muscle in bright red, secondary muscles lighter, in time with the effort
  • Front and back, from every angle: spin the body with your finger
  • A neglected muscle stays pale: you see what needs catching up
Target a muscle screen: the clay 3D body, the slider of weekly sets per muscle and the list of muscles.
“Your body over 4 weeks” card: two bodies, front and back, colored by consistency, 29 muscles worked nearly every week.

AI Coach

Tell it about your workout. It logs it.

The coach reads your log and speaks gym. Type or dictate the way you talk, and it replies with a card ready to save. Nothing goes into your log until you confirm.

Did bench 4x8 at 80, pull-ups 3x10 and 3 one-minute planks

“Push” workout · 10 setsBench press 4 × 8 · 80 kgPull-ups 3 × 10Plank 3 × 1 minReady to save

Build me a workout, I’ve got half an hour

Legs · 3 exercises · 30 minLeg press 3 × 6-10 · 155 kgRomanian deadlift 3 × 8-12 · 82.5 kgReverse lunges 3 × 8-12Your most rested muscles, with your weights

How much protein do I have left?

You have 180 g of protein left today: you haven’t logged anything yet, and your goal is 180 g.
The coach replies “You have 180 g of protein left today” with the Your intake card: 2,090 kcal and 180 g of protein remaining.

Describe a workout

“This morning: bench 4 × 8 at 80 kg” becomes a full workout, ready to edit or save.

Describe a meal

By text or by voice: it finds the foods, the amounts and the macros.

Generated workout

Based on today’s recovery, your equipment and the time you have.

Questions about your log

“Can I train legs today?”, “How’s my bench press going?”

The coach is part of Lesto Premium. It only turns on after your explicit consent, and gives general fitness advice, not medical advice. It needs an internet connection; exactly what it receives is spelled out in the privacy policy.

Nutrition

Say what you eat. Lesto does the math.

One sentence is enough: Lesto builds the meal, food by food, with amounts and macros. You adjust, you add. Nutrition tracking for lifters, without the headache.

A bowl with 180 g of chicken, white rice and broccoli
590kcal · 3 foods · 66 g of protein
Describe a meal screen: a field to type or dictate, the Build meal button and an example, “2 eggs, a slice of whole-grain toast and a coffee.”
Built meal “Chicken rice broccoli bowl”: 590 kcal, 66 g protein, 64 g carbs, 6 g fat; chicken 180 g, white rice 180 g, broccoli 150 g; Add meal button.
Five-day meal plan with photos of the dishes, 2,124 kcal planned for the day and protein at 190 of 180 g.
Snack suggestion: mango passion fruit skyr, 590 kcal, 40 g of protein, covering 83% of the remaining protein.
3,484

Foods, offline

The Ciqual food composition table (French agency Anses) built into the app, plus barcode scanning with Open Food Facts.

5

Tools to stay on track

Calculated targets, weight trends, saved meals, recipes and meal plans with a shopping list.

2

Taps for a usual food

Your recent foods as tiles: one tap opens the food and its amount, a second adds it.

First launch

Two minutes to set your calories.

When you first open it, Lesto asks for your age, height, weight and goal, calculates your basal metabolic rate (Mifflin-St Jeor equation) and derives your calories and protein from it. Try it:

Sex, for the calculation
Goal

Basal metabolic rate

1,723kcal

10 × 78 + 6.25 × 178 − 5 × 35 + 5 = 1,723 kcal

Estimated daily expenditure2,671 kcal
Daily target2,938 kcal
Protein per day140 g

Estimate for an active lifestyle and four workouts a week. In the app, Lesto fine-tunes it with your real activity level, your workouts and your weight curve. General advice, not medical advice.

Onboarding, what’s your goal: bulk +12%, cut −20%, recomp −5%, maintain 0%.
Onboarding, your height and weight: 178 cm and 78 kg, with the basal metabolic rate calculated live, 1,723 kcal, along with its formula.
Onboarding, your calories and macros: daily target of 3,100 kcal for a bulk, a 280 kcal surplus.
Onboarding, supplements if you want them: creatine and whey, what they do, when to take them, with the level of evidence.

Then a quick tour of the app, a ready-made program based on your days and your goal, and supplements explained: what they do, when to take them.

Calendar

Your month at a glance.

Completed workouts underlined with a slanted stroke, planned ones dotted, supplements taken and the days your nutrition hit the target. Below, the month in review: workouts, volume, days you hit your protein.

  • A complete legend: done, planned, missed, rest, supplements, nutrition
  • The current week in a sheet, from the home screen or the coach
  • Light or dark, following your iPhone’s setting
October 2026 calendar in light mode: completed workouts underlined in ember, today circled, and the month in review: 2 workouts, 4 days on target, 4 days hitting protein.
The same calendar in dark mode.

One app instead of three.

Usually, you juggle a training log, a calorie app and reminders. Here’s what changes.

Typical appsLesto
Workouts, meals, supplementsTwo or three apps that don’t talk to each otherIn one place, connected
Logging a setValues to retypePre-filled, one tap
Muscles workedA list or a flat diagram3D body and 330 animated exercises
LoggingFormsYou describe it, the coach prepares it
AccountOften requiredNone
AdsCommon in free versionsNever
Free versionLimited to push you to payAll logging, no limits
Food databaseOften user-entered, of uneven qualityCiqual reference table, plus barcode scanning

Privacy

Your data stays on your iPhone.

Lesto has no account and no server holding your log. Your workouts, meals, weight and photos are stored on your phone. The AI coach receives nothing until you say yes, knowing exactly what gets sent.

No account

No email, no password. Open the app and train.

Explicit consent

One screen tells you what goes to the coach, to whom, why and for how long. You can withdraw it at any time.

No ads, no tracking

No ads, no trackers, nothing resold. This website neither: no cookies.

Yours, for good

Free full export at any time, delete everything in one tap.

Read the privacy policy
Enable the AI coach screen: what gets sent, to whom, why, for how long, how to withdraw your consent, with the Not now and Accept buttons.

Free to log. Premium to understand.

Everything you need to log stays free, with no limits and no ads. Premium adds what helps you make progress.

Free

Log everything, no time limit.

  • Workouts, programs, personal records and rest timer
  • Meal log, barcode scanning, recipes
  • Supplements and reminders
  • Weight, body measurements and progress photos
  • Your full history, every chart, the calendar
  • 3D body and 330 animated exercises
  • Animated workout finish, personal records, streaks and badges
  • Full export of your data

Premium

To understand and go further.

  • The AI coach: described workouts, generated workouts, described meals, questions about your log
  • Workout reviews and daily readiness
  • Program generator
  • Meal analysis from a photo
  • Meal suggestions and meal plans
  • Advanced analytics and customization

Prices announced when pre-orders open. Monthly or yearly subscription, cancel anytime in your App Store settings.

Frequently asked questions

When is Lesto coming out?

Early November 2026, on the App Store. Pre-orders open in mid-October: leave your email with the yellow button and we’ll let you know on launch day.

Which devices?

iPhone, with iOS 16.4 or later; the app is designed for iOS 26. There’s no Android version for now.

Do I need to create an account?

No. Open the app, answer a few questions to set your goals, and get started. No email, no password.

What’s free?

Everything you need to log: workouts, programs, meals, supplements, measurements, history, charts, the 3D body and animated exercises, export. Premium adds the AI coach, the program generator, photo meal analysis, meal suggestions and meal plans, and advanced analytics.

How does the AI coach work?

Type or dictate your workout, your meal or your question. It replies with a card you can edit or save: it never touches your log without your confirmation. It needs an internet connection and only turns on after your explicit consent. General fitness advice, not medical advice.

I’m coming from Hevy. Can I keep my history?

Yes: export your history as a CSV from Hevy and import it into Lesto. Your workouts come over with their sets, and your personal records are recalculated.

Where does the food data come from?

From the Ciqual food composition table by the French agency Anses (3,484 foods, usable offline) and, for packaged products, from Open Food Facts, by scanning the barcode.

All questions, and how to reach us

Be there on launch day.

Lesto lands on iPhone in early November. One email and we’ll let you know, nothing else: no newsletter, no follow-ups.

Notify me at launch Write to the founder

Made in France, by a lifter who trains with it. A question, a bug, an idea: contact@getlesto.app, and he’s the one who answers.