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The math, the principles, and the thinking behind Onyx Tenet.
The Math Behind Calorie Tracking
Every equation inside a calorie tracker, with worked examples. BMR estimation, adaptive TDEE, macro scaling, and body composition math, all in one place.
Why Your Calorie Tracker Doesn't Need Your Email
Every major calorie tracker requires an account before you can log a single meal. None of them need one. Here's why they ask anyway, and what a no-account architecture actually looks like.
Why Your TDEE Calculator Is Probably Wrong
Static TDEE formulas can be off by 200-400 kcal. Here's the math behind why, and what adaptive TDEE does differently.