Measure what matters. Optimize on data.

How the scoring works. Each tool takes 8-15 inputs across biomarkers, lifestyle, and subjective metrics, then weights them against research-derived optimal ranges. The biological age calculator uses a modified Levine PhenoAge algorithm. The testosterone score weights sleep duration, training history, body composition, and lab values using effect sizes from published meta-analyses. No black box.

What you get back. A single composite score, a breakdown by domain so you see which inputs are pulling the score down, the three highest-leverage interventions for your specific profile, and a printable protocol you can share with a physician. Not medical advice — a structured way to think about your numbers and where to apply effort first.

When to use which tool. Start with biological age if you want a snapshot of overall health trajectory. Use the testosterone score if symptoms suggest hormonal optimization is the bottleneck. Sleep analyzer if you track Oura/Whoop/8Sleep and want diagnostic interpretation. HRV optimizer if you train hard and want zone calibration. Recovery protocol generator if you're overreaching or returning from injury.

Privacy. Tool inputs are processed in the browser. We store only the final score and your email if you opt into the email report — never the raw biomarker values or symptoms. No data sold, no third-party analytics on tool pages. The full privacy posture is on the privacy page.