Press

Everything you need to write about Macro Tracker is on this page: the facts, a description you can quote, screenshots in eleven languages, and how to reach me. The images are free to use in anything you write about the app. There's no need to ask.

Facts

Name: Lethio Macro Tracker
What it is: A calorie and macro diary built on the national food tables of fifteen countries
Developer: Terje Rutgersen, Lethio. One person, Norwegian, living in southern Spain.
Platform: Android 8 and later, on Google Play
Version: 1.2.0, October 2026
Price: Free. No ads, no subscription, no paid version, no account.
Languages: English, Norwegian, Swedish, Danish, Finnish, Dutch, German, French, Spanish, Portuguese and Italian
Food tables: Australia (AFCD), Canada (Canadian Nutrient File), Denmark (Frida), Finland (Fineli), France (ANSES-Ciqual), Germany (BLS), Netherlands (NEVO), New Zealand (FOODfiles), Norway (Matvaretabellen), Portugal (TCA), Spain (BEDCA), Sweden (Livsmedelsdatabasen), Switzerland (Swiss Food Composition Database), United Kingdom (CoFID), United States (USDA FoodData Central)
Foods on the phone: 567,454: 47,022 from national food tables and 520,432 packaged products from Open Food Facts
Works offline: Yes. The whole database is inside the app.
Source code: github.com/TerjeRu/lethio-macro-tracker, MIT License
Website: macros.lethio.com, in all eleven languages

About the app

One sentence:

Lethio Macro Tracker is a free calorie diary for Android that gets its numbers from the national food tables of fifteen countries, shows your own country's table first, in your language, and works without a connection or an account.

A paragraph:

Most calorie apps get their numbers from their users, so a search for "rice" turns up forty entries that all disagree. Macro Tracker uses the national food composition tables that governments publish and dietitians rely on instead. There are fifteen of them in the app, from Norway's Matvaretabellen to the USDA, and the one for your country comes first, in your language. Every result names its source, and a value the table doesn't list is shown as unknown rather than zero. Half a million packaged products from Open Food Facts come with it, so the barcode scanner works in a shop with no signal. It is free, has no ads or account, keeps the diary on the phone, and was tested for accessibility with the largest text size and TalkBack.

Why it exists, in my words:

I'm Norwegian, and I live on the Spanish coast, where a good few of the shops stock food for Scandinavians. My phone is in English, the labels are in Norwegian, Swedish or Spanish, and no calorie app I tried could make sense of that. So I built one that could.

Images

Store screenshots in English below. Each language has its own set, with the app and captions in that language, and that country's table on the first screen.

Each zip is about 1 MB: six screenshots (1080 × 1920), the feature graphic and the icon.

Search results for rice from the UK table, with the source on every row. — Your country's food table, first

Today's diary, with calories and macros left at the top. — What's left today, at a glance

Copying yesterday's breakfast to today. — Ate the same yesterday? Copy it

An undo prompt after a change in the diary. — Changed your mind? Undo

Logging a food with the published values per 100 g. — Published values, not guesses

Seven-day calorie history against targets. — A week against your targets

Feature graphic (1024 × 500) · Icon (512 × 512)

Contact

Email support@lethio.com. It reaches me directly. If you'd like to try the app before writing about it, it's on Google Play, and there is nothing to unlock.

I also write about the decisions behind it at lethio.com, including why the Open Food Facts data is published back and how Spain's food table became a CSV.

This page in other languages: Norsk · Svenska · Dansk · Suomi · Nederlands · Deutsch · Français · Español · Português · Italiano