PEER-REVIEWED TOOLS
Most Fitness Tools
LIE TO YOU.
We only built tools where the science was already settled. Every calculator here is backed by peer-reviewed research — not bro-science, not gym myths. Just what actually works.
498+ subjects validated our calorie formula
We show you which study we used — and why
If better research exists, we update the tool
EXPLORE TOOLS →
5 tools available · More coming soon
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Maintenance Calories
Mifflin-St Jeor · 1990
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Body Fat %
Navy Method · HODGDON 1984
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Protein Intake
Morton et al. · 2018
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TDEE Calculator
Activity-adjusted · Multi-study
RESEARCH BACKED
THE TOOLKIT
Built on Research. Designed for Results.
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TDEE Calculator
Total daily energy with activity
COMING SOON
🔥 VIRAL
New tools are added as we validate the underlying research. No guesswork. Ever.