Track Your CaloriesIn Seconds

Snap a photo of your meal and let AI do the rest. Track calories, macros, fasting, water, and more — all in one app.

Download on theApp StoreDownload on theGoogle Play
  • Free to use
  • No credit card required
Leen app home screen on iPhone (en)
Leen on Apple Watch (en)

Everything You Need

Simple tools to help you stay on track every day.

01

AI Food Scanner

Snap a photo of your meal and get instant calorie estimates.

AI Food Scanner — Snap a photo of your meal and get instant calorie estimates. (en)
02

Fasting Tracker

Start, track, and complete your intermittent fasting sessions.

Fasting Tracker — Start, track, and complete your intermittent fasting sessions. (en)
03

Fasting Achievements

Unlock badges and build your streak every time you complete a fast.

Fasting Achievements — Unlock badges and build your streak every time you complete a fast. (en)
04

Water Tracker

Log your water intake and make sure you stay hydrated.

Water Tracker — Log your water intake and make sure you stay hydrated. (en)
05

Progress & Analytics

See detailed charts of your calories, weight, and habits over time.

Progress & Analytics — See detailed charts of your calories, weight, and habits over time. (en)
06

Habit Trends

Watch your water and fasting consistency build up week after week.

Habit Trends — Watch your water and fasting consistency build up week after week. (en)

Frequently Asked Questions

Everything you need to know before you start.

How does Leen count calories from a photo?
Just snap a photo of your meal and Leen's AI food recognition instantly estimates the calories and macros. You can adjust the portion size before saving to keep it accurate.
Is Leen free to use?
Yes. Leen is free to download and use — no credit card required to get started tracking your calories.
Which devices does Leen support?
Leen is available for iPhone (iOS) and Android, plus a companion Apple Watch app so you can log meals, water, and fasting on the go.
Can I track intermittent fasting with Leen?
Absolutely. Leen includes a built-in fasting timer with challenges and ketosis and autophagy stages, so you can fast with focus alongside your calorie tracking.
Does Leen track macros, water, and weight too?
Yes. Beyond calories, Leen logs protein, carbs, and fat macros, water intake, steps, and weight progress — all visualized with clear charts.
Do I need to weigh my food to track it?
No. Snap a photo or simply describe your meal and Leen estimates the portions for you. You can always fine-tune the amounts if you want more precision.

Start Tracking Today

Download Leen for free and take control of your nutrition in seconds.

Download on theApp StoreDownload on theGoogle Play