# Why every fitness app makes TDEE confusing (and my free fix)

> Source: <https://dev.to/gavinbuilds/why-every-fitness-app-makes-tdee-confusing-and-my-free-fix-49e0>
> Published: 2026-06-28 06:51:53+00:00

I've been tracking calories for 2 years and every TDEE calculator I used asked for my email or pushed a premium plan. So I built my own.

[FreeTDEE.com](https://freetdee.com) calculates your daily calorie needs using the Mifflin-St Jeor formula. Pick your activity level, get your maintenance, cutting, and bulking targets instantly.

No app. No account. Data stays in your browser's localStorage. Built with Next.js + Cloudflare Pages in ~3 hours using AI.