AI calorie scanner for iPhone

Point. Shoot. Understand your food.

LeanLens turns a photo of your plate into calories, macros, ingredients, and a Lens Score — in about seven seconds. No weighing, no database digging, no guilt. Just look at your food clearly, then get on with your life.

Download on the App Store Try the live demo

Free to start · 3 AI scans a day · English + 繁體中文

Streak🔥 12 days
Lens Score8.2 / 10
LeanLens 🔥 12
🥗

Chicken pesto bowl

550 kcal · 42g protein

Lens 8.2
Add to today
Today Fast Trends You
~7s

photo to macros

3 ways

photo · words · barcode

0g

of food weighing

2 languages

English + 繁體中文

How it works

Logging a meal should take less time than eating one.

Most calorie apps make you search databases and weigh portions until you quit. LeanLens works the way you actually eat.

01

Snap your plate

Point your camera at any meal — restaurant plate, home cooking, half-eaten leftovers in bad lighting. Or describe it in words, or scan a barcode.

02

See it clearly

In seconds you get the dish, calories, macros, and every ingredient. Drag the portion slider, tap away the ingredients you didn't eat. Done.

03

Stay on track

Your calorie ring, macro bars, streak, and weight trend update instantly — and your Lens Score tells you how the plate fits your plan.

Everything in focus

A full tracker behind a single shutter.

📸

Scan anything

Photo, plain-language description, or barcode — powered by AI vision and the Open Food Facts database. Three free scans every day.

🎯

Lens Score

Every meal gets a 0–10 score for how well it fits your plan — one honest number instead of a wall of nutrition data.

🍽️

Frequent plates

LeanLens remembers what you eat. Re-log your usual breakfast in one tap — no camera needed for the meals you have on repeat.

⏱️

Fasting timer

A persistent fasting clock lives right next to your food log, so eating windows and meals stay in one place.

📈

Trends that matter

Weight chart, weekly macro bars, and a 7-day history strip. Apple Health sync brings burned calories in and sends your weight out.

🔥

Streaks & nudges

A server-tracked streak and a gentle 2 PM reminder protect your momentum on the days life gets loud.

🧊

Pantry LensPro

Photograph your open fridge and get meal ideas that fit the calories you have left today — dinner, decided.

📰

Weekly Lens ReportPro

An AI-written weekly digest: your best plate, your sneaky calories, and one specific thing to try next week.

🌏

Fully bilingual

Complete English and Traditional Chinese (繁體中文) localization — including the AI report. 拍一下，看懂你的飲食。

Pantry Lens · Pro

Your fridge already knows what's for dinner.

Open the fridge, take one photo. Pantry Lens reads what you have and suggests meals that fit the calories and macros you have left today — so the last meal of the day stops being the one that breaks the plan.

Try Pro free for 7 days
🍳

Veggie frittata

eggs · spinach · feta

410 kcal
🥘

Chicken stir-fry

chicken · peppers · rice

520 kcal
🥙

Greek yogurt bowl

yogurt · berries · honey

290 kcal

Share your plate

Every meal, a story worth posting.Soon

One tap turns any scan into a 9:16 share card — your dish, your kcal, your Lens Score, your streak. Three styles, all yours.

LeanLens
Meal № 214 · Sunday July 13
Poppy-seed chicken with golden fries on a share card

Poppy-Seed Chicken
& Golden Fries

685kcal
7.4LENS SCORE
Carbs 52g  ·  Protein 46g  ·  Fat 31g
12-day streak
scanned with LeanLens

Editorial Cover — calm confidence

DAY 12
Poppy-seed chicken with golden fries in an arched trading-card frame
7.4LENS SCORE

Poppy-Seed Chicken & Golden Fries

685 kcal
C · 52g P · 46g F · 31g
scanned with LeanLens

Collectible Card — trading-card energy

LeanLens
JUL 13
685
kcal · lunch
Poppy-seed chicken with golden fries in a circular cutout

Poppy-Seed Chicken & Golden Fries

Carbs 52 · Protein 46 · Fat 31
7.4LENS
12-day streak
scanned with LeanLens

Night Poster — bold on Stories

Pricing

Start free. Go Pro when you're hooked.

Free

Everything you need to build the habit.

$0

forever

  • 3 AI scans per day — photo, words, or barcode
  • Calorie ring, macro bars & 7-day history
  • Fasting timer, water & weight logging
  • Streaks with 2 PM protection nudge
  • Apple Health sync
Download free
7-day free trial

LeanLens Pro

Unlimited lens. Weekly coaching.

$3.33 /mo

billed $39.99/year (save 52%) · or $6.99 month-to-month

  • Unlimited AI scans — never ration a photo
  • Pantry Lens — fridge photo → meal ideas that fit your day
  • Weekly Lens Report — AI digest of your best plate & sneaky calories
  • Advanced trends & full history
  • Everything in Free
Start 7-day free trial

Cancel anytime in the App Store. The trial reminds you before it ends — no gotchas.

Questions

Fair questions, straight answers.

How accurate is AI calorie counting from a photo?
LeanLens gives you a fast, well-grounded estimate — dish, portion, calories, macros, and ingredients. A portion slider and tap-to-remove ingredients let you correct it in seconds. Estimates are guidance, not lab measurements — but logging every meal imperfectly beats logging three meals perfectly and quitting.
What is a Lens Score?
Every scanned meal gets a 0–10 Lens Score: one honest read on how well that plate fits your calorie and macro plan. Higher means it moves you toward your goal. It's the difference between data and understanding.
What if I can't take a photo?
Describe your meal in plain words ("two slices of pepperoni pizza and a coke") or scan the barcode on packaged food. LeanLens handles all three, and remembers your frequent plates for one-tap re-logging.
What's free, and what's Pro?
Free gives you 3 AI scans a day plus the full tracker — calorie ring, macros, fasting timer, streaks, trends, Apple Health. Pro adds unlimited scans, Pantry Lens, and the Weekly Lens Report for $6.99/month or $39.99/year with a 7-day free trial.
Does LeanLens sync with Apple Health?
Yes. Burned calories flow in from Apple Health; your weight entries flow back out. Your whole picture stays in one place.
Does LeanLens work in Chinese?
完全支援。LeanLens is fully bilingual in English and Traditional Chinese (繁體中文) — every screen, and the AI weekly report too.

Your next meal is data.
If you want it to be.

Download LeanLens, point it at lunch, and find out what you've been eating all along. Free to start — the camera does the rest.

Download on the App Store

Or try the interactive demo in your browser →