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Fitby WareSyn
Scientifically Validated Sports Nutrition
Master your calories.
Build your ideal physique.
Built specifically for gym-goers. Calculate your exact Mifflin–St Jeor TDEE, customize protein and macro targets, log nutrition with zero friction, and monitor body-weight progression.
Exact Science
Mifflin–St Jeor BMR calculations, activity multipliers, and conservative deficit/surplus models verified by unit tests.
Macro Precision
Targeted 1.2–2.2g/kg protein tailoring for resistance training, balanced fats, and dynamic carbohydrate allocation.
Privacy & Isolation
Firebase Authentication and granular Firestore Security Rules ensure your health records are accessible only to you.