Precision health tools, zero noise.

Free calculators and supplement data built on clinical evidence and public datasets. No accounts, no paywalls, no agenda.

Calculators

Caffeine Clearance

See how caffeine clears your system based on body weight, dose, and metabolizer status. Find your cutoff time for better sleep.

Vitamin D Repletion

Calculate weekly dosing to reach your target 25-OH level based on current labs, body weight, and timeframe.

Sleep Debt Tracker

Track cumulative sleep deficit and estimate recovery time based on your actual sleep patterns.

Creatine Loading

Compare loading vs. daily dosing protocols. Optimal dose by lean body mass with saturation timeline chart.

Protein Intake

Find your daily protein target by body weight, goal, activity level, and age. Evidence-based ranges.

More Calculators

Supplement timing, electrolyte needs, fiber diversity, iron absorption, and more coming soon.

Supplement Search

Ingredient Search Engine

Search 200,000+ supplement labels by ingredient, form, or what you want to avoid. Filter by ingredient count, exclude sweeteners, find specific forms like Creapure or methylfolate.