A porcelain twin of your body, shaped by your own tape.
Wrap a tape measure around up to 14 places, add your height, and Leano 2 reshapes a 3D figure to your numbers. Measure again a week later and it shows where the centimetres went.
Free on iPhone and iPad. Nothing to sign up for.
The twin shows where the tape goes
While you measure, each site lights up on the 3D figure with a line on where to hold the tape. Left and right arms and legs are measured separately, so a difference between sides shows up instead of being averaged away.
Left and right are your own sides, so on this front view your left arm is on the right.
- 1NeckJust below the Adam’s apple, the tape sloping slightly down toward the front.
- 2ShouldersAround the widest point of both shoulders, arms hanging at your sides.
- 3ChestAcross the fullest part of the chest, under the armpits.
- 4, 5Upper armsHalfway between shoulder and elbow, arm relaxed.
- 6, 7ForearmsAround the widest part, just below the elbow.
- 8WaistMidway between your lowest rib and the top of your hip bone.
- 9BellyLevel with your navel, standing relaxed.
- 10HipsAround the widest part of your buttocks, feet together.
- 11, 12ThighsJust below the fold of the buttock, around the thickest part.
- 13, 14CalvesAround the widest part of the calf.
| Quick | Waist, hips and chest. About two minutes. |
|---|---|
| Standard | Eight parts across trunk, arms and legs. |
| Full body | All 14 parts, both sides. |
| My selection | The parts you pick. |
Height, weight and an optional body-fat reading from a smart scale complete a session. Switch on two readings and you measure each part twice; Leano keeps the average.
Then and now, on the same body
Pick an earlier session and it stays around today’s twin as a faint ghost. The heat map colours each region by the centimetres it gained or lost, and the session tape under the twin moves the body through every date you measured.
- Smaller
- Bigger
| Part | Then (cm) | Now (cm) | Change |
|---|---|---|---|
| Shoulders | 118.3 | 120.2 | +1.9 |
| Chest | 96.2 | 98.0 | +1.8 |
| Left upper arm | 30.1 | 31.2 | +1.1 |
| Right upper arm | 30.1 | 31.2 | +1.1 |
| Waist | 80.7 | 77.7 | −3.0 |
| Belly | 76.8 | 73.4 | −3.4 |
| Hips | 96.9 | 95.6 | −1.3 |
| Left thigh | 55.4 | 56.0 | +0.6 |
| Right thigh | 55.4 | 56.0 | +0.6 |
| Neck, forearms and calves moved less than the tape can tell apart. | |||
Colour never decides what counts as progress. You choose a goal (lose, gain or recompose) and Leano says in words whether each change moves toward it. A change too small for a tape to tell apart is marked as within tape error.
Comparing your latest two sessions is free. Any two dates, the heat map and time-lapse are part of Pro.
A calm weight trend through the daily swings
Log your weight in a few seconds, or let Leano read it from Apple Health. Each day moves the trend 10% of the way toward that day’s weight, so water and salt swings barely touch it, and the weekly rate reads the trend, never a single morning.
Set a goal weight and Leano shows how far the trend still has to go and the next milestone on the way. Pro adds an estimated goal date from the last three weeks. Leano leaves the date out while there is too little data, while the trend is level or heading away from the goal, or when the date would be more than two years off.
When the scale stalls, the tape often still moves. In the same eight weeks of sample data, the weight trend fell 0.3 kg while the waist lost 3.0 cm.
Weigh-ins, the trend, the weekly rate and charts of the last 90 days are free.
Show the weigh-ins as a table
| Day | Weigh-in | Trend |
|---|---|---|
| Day 1 | 83.7 kg | 83.7 kg |
| Day 2 | 83.9 kg | 83.7 kg |
| Day 5 | 84.4 kg | 83.9 kg |
| Day 6 | 83.4 kg | 83.9 kg |
| Day 7 | 83.6 kg | 83.8 kg |
| Day 8 | 83.7 kg | 83.8 kg |
| Day 9 | 83.9 kg | 83.8 kg |
| Day 11 | 84.2 kg | 83.9 kg |
| Day 12 | 84.4 kg | 83.9 kg |
| Day 13 | 83.4 kg | 83.9 kg |
| Day 15 | 83.7 kg | 83.9 kg |
| Day 17 | 84.0 kg | 83.9 kg |
| Day 18 | 84.2 kg | 83.9 kg |
| Day 19 | 83.2 kg | 83.8 kg |
| Day 20 | 83.4 kg | 83.8 kg |
| Day 21 | 83.5 kg | 83.8 kg |
| Day 23 | 83.9 kg | 83.8 kg |
| Day 24 | 84.0 kg | 83.8 kg |
| Day 26 | 83.2 kg | 83.7 kg |
| Day 27 | 83.3 kg | 83.7 kg |
| Day 29 | 83.7 kg | 83.7 kg |
| Day 30 | 83.8 kg | 83.7 kg |
| Day 31 | 84.0 kg | 83.7 kg |
| Day 32 | 83.0 kg | 83.6 kg |
| Day 33 | 83.2 kg | 83.6 kg |
| Day 35 | 83.5 kg | 83.6 kg |
| Day 37 | 83.8 kg | 83.6 kg |
| Day 38 | 84.0 kg | 83.7 kg |
| Day 39 | 83.0 kg | 83.6 kg |
| Day 41 | 83.3 kg | 83.5 kg |
| Day 42 | 83.5 kg | 83.5 kg |
| Day 43 | 83.6 kg | 83.5 kg |
| Day 44 | 83.8 kg | 83.6 kg |
| Day 45 | 82.8 kg | 83.5 kg |
| Day 48 | 83.3 kg | 83.4 kg |
| Day 49 | 83.5 kg | 83.4 kg |
| Day 50 | 83.6 kg | 83.5 kg |
| Day 51 | 83.8 kg | 83.5 kg |
| Day 53 | 83.0 kg | 83.4 kg |
| Day 54 | 83.1 kg | 83.4 kg |
| Day 55 | 83.3 kg | 83.4 kg |
| Day 56 | 83.4 kg | 83.4 kg |
| Day 57 | 83.6 kg | 83.4 kg |
Four numbers, each with its source
Leano works these out from your tape and scale readings and shows the formula behind each one. They describe body shape. They are not a diagnosis, and they do not replace a conversation with a doctor.
| Number | Worked out from | Lines Leano shows | Source |
|---|---|---|---|
| Waist-to-height ratio | Waist divided by height. | Under 0.5 means a waist less than half your height. Adults: 0.4 to 0.49 no increased risk, 0.5 to 0.59 increased, 0.6 or more high. | NICE guideline NG246 (2025). Ashwell and Gibson, BMJ Open 2016. |
| Waist-to-hip ratio | Waist divided by hips. | The WHO cut-off for substantially increased risk: 0.90 for men, 0.85 for women. | WHO expert consultation, Geneva 2008. |
| Body fat, US Navy method | Neck, waist and height, plus hips in the female formula, worked in inches as in the original equations. | An estimate that can be a few points off. No bands: follow your own trend. | Hodgdon and Beckett, Naval Health Research Center reports 84-11 and 84-29, 1984. |
| BMI | Weight divided by height squared. | Adults: under 18.5 underweight, 25 overweight, 30 obesity. | WHO Technical Report Series 894, 2000. |
Progress photos that line up
The camera shows a faint ghost of your last photo in the same pose, so your feet, framing and distance match from one week to the next. Take front, side and back photos with a 3 or 10 second timer, then compare two dates with a slider.
Photos stay inside Leano on your device. They are never uploaded and never added to your photo library.
Free compares your latest two photos of a pose. Pro compares any two dates.
What stays on your phone, and what leaves it
Leano has no account, no analytics, no ads and no tracking. What you record is kept on your iPhone or iPad.
Stays on your device
- Every measurement, with its date, time and note
- Daily weigh-ins and the trend drawn from them
- Height, weight, body fat and any values read from Apple Health
- Progress photos
- Life events, targets and settings
Leaves it
- Purchases and restores, handled by Apple. Leano never sees your payment details.
- A check for app updates: Expo’s update service receives a random installation ID, the app version and the platform. No measurements, photos or health data.
- Files you share yourself, such as a CSV export, a PDF report or a share card. They go where you send them.
Free to measure, Pro for the deeper views
Free, with no time limit
- All 14 parts, height, weight and body fat
- The 3D twin and the session tape
- Your latest two sessions compared, with the ghost
- The four numbers and their sources
- Daily weigh-ins with the trend, weekly rate and a goal weight
- Progress photos with the ghost guide
- Apple Health, the weekly reminder, CSV export and import, the share card
Pro adds
- The heat map and time-lapse
- Any two dates side by side, for the body and for photos
- Charts for every part
- The estimated goal date, milestone history and weight charts beyond 90 days, with the waist on the same chart
- A PDF report of your sessions, ratios and changes
- Your own parts and a target for each part
Pro is a monthly or yearly subscription, or a lifetime purchase paid once. The yearly plan starts with a free trial if your Apple Account has not used one for Leano. The App Store shows the price in your currency before you pay.
If Pro ends, nothing is locked. Every session, photo and value stays visible, editable and exportable.
Coming from Leano 1
Update the app and open it. Leano 2 moves over your measurements, weight, goals, life events, your own parts and the photos still on your phone, then builds the twin from your latest numbers. An active Leano 1 subscription is recognised through the App Store, with nothing to restore by hand.
Start with your waist
One number already gives the twin its shape. Add the rest when you have a few minutes.
