About
Body Numbers is made by Selanto Apps, a one person software studio in Rotterdam, the Netherlands, run by Antonio Cappiello.
Why this exists
Most BMI apps give you one number and stop. That number is easy to misread: BMI compares weight with height and nothing else, so it reads a muscular person as overweight and can read someone with very little muscle as healthy. People notice this, do not trust the result, and are left none the wiser.
This app takes the opposite approach. It runs several published methods side by side, names each one, shows the range it is reading against, and points out when two methods disagree about you. Where a method has a known weakness, the app says so on the same screen as the number.
How the numbers are checked
Every formula in the app lives in one place, a small library that holds the maths and nothing else. It is tested against the published sources: the WHO growth reference tables are checked value by value, and the adult formulas are checked against worked examples from the papers they come from. If a test disagrees with the reference, the build fails.
That is the reason the app can afford to cite its sources on screen. The citation is not decoration; the number behind it was checked against that source.
What this is not
Nobody here is a doctor or a dietitian, and this site does not pretend otherwise. Body Numbers calculates; it does not diagnose, treat or monitor anything. Where a result might matter, the right next step is a conversation with a health professional, not another app.
The site cites primary sources so you can check the reasoning yourself. Where a figure comes from a paper, the paper is named with its year and journal.
Who to contact
Questions, corrections and bug reports all go to the same place: see thesupport page. Corrections to the numbers or the sources are especially welcome.
Other apps from Selanto
Weight Diary: Your weight day by day, and the trend under the noise.
Body Diary: Measurements over time, with the photos and charts beside them.
Puff Counter: Counts what you smoke or vape, and helps you stop.
Uplift Affirmations: Daily affirmations for mindset, self-care and motivation.
Tap On Time: A reaction and timing game. Tap on time and save the chicken.
Selanto Apps: All apps from the studio behind Body Numbers.
Antonio Cappiello: The developer behind Selanto Apps and Body Numbers.
This is not medical advice. Body Numbers is a calculator. It does not diagnose, treat or monitor any condition, and no number it produces should replace a conversation with a doctor or a dietitian. If a result worries you, or if you are pregnant, unwell, or under eighteen, speak to a health professional.
