Metron: Measured Nutrition
Food that follows your body
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Metron measures what you eat and tells you where the day stands.
PHOTOGRAPH, SCAN OR READ
Point the camera at a plate, a barcode or a nutrition label. The AI names each food and estimates the portion; a reference nutrition database supplies the figures, and every item names its source. When a match is uncertain, Metron shows the confidence and asks you to check. Anything the database does not hold is marked as the model's estimate, or left blank — never passed off as a lookup.
A BUDGET THAT FOLLOWS YOUR BODY
Your daily budget starts from your height, weight, age and activity, and your goal: lose fat, maintain or build. Over the weeks it comes to rest on what your own weight trend actually did, and the app says how much of the number is yours yet. With cycle tracking on, it rises in the luteal phase — by around 180 kcal — instead of reading the difference as you going over. Log a workout and that day's budget rises by what it burned.
ASK BEFORE YOU EAT
Ask about a food and see what it costs and what it leaves for the day. The decision stays with you.
BUBO
A small owl who tells you when Metron has measured something new: your first trend line, a budget taken from your own data, your week ready to read. He never names or grades what you ate.
APPLE HEALTH
With your permission, Metron can write your meals to Apple Health. On the Recovery track it reads sleep, heart-rate variability and workouts to show whether you are recovered, steady or depleted against your own history.
PRIVATE BY DESIGN
Period dates never leave your iPhone; our server learns the name of the phase, never a date. Meal photos are processed and discarded — never stored on our servers, never used to train a model. Your meals and photos are processed in the EU. No advertising SDK, no analytics platform, no data broker.
FREE AND PRO
Free, at full accuracy: barcode, label and manual logging without limit, three photo scans in any seven days, the budget, the phases, the pregnancy food list and the 51+ track. Metron Pro adds unlimited scans, separate training-day and rest-day budgets that keep the week's total, your own macro split and micronutrient watchlist, the home-screen budget widget, and a Today screen, vessel and owl you make your own.
Metron Pro is an auto-renewing subscription: EUR 9.99 per year, or EUR 1.99 per month. Payment is charged to your Apple Account at confirmation of purchase. It renews automatically unless auto-renew is switched off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours of the end of that period. Manage or cancel in your Apple Account settings.
Terms of Use: https://metronapp.xyz/terms
Privacy Policy: https://metronapp.xyz/privacy
Metron is not a medical device and does not diagnose or treat any condition. It does not set targets for anyone under 18.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Recovery now shows what Apple Health recorded today: active energy, steps, last night's sleep and resting heart rate, and what each does to your budget. If you switch it on, workouts from Apple Health raise your budget too. A run recorded by two apps counts once, and if you also logged it yourself, Metron asks whether it is the same session.
The Cycle calendar can record the day a period ended, so each period is drawn at its real length, and after two logged ends Metron measures your usual length.
Your height can now be changed from You, for anyone who has grown or mistyped it.
The developer, Symeon Lampadarios, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Symeon Lampadarios
- Size
- 17.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 5 more
- English, Dutch, French, German, Italian, Spanish
- Age Rating
13+
- 13+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Metron Pro — Monthly $1.99
- Metron Pro — Annual $8.99
- Copyright
- © 2026 Symeon Lampadarios
