Find out where you stand. Then act on it.
14 free tools, no sign-up required. Start with the four that carry the whole method — assess, test, record, re-check — then use the rest as your plan needs them. Sign in only if you want results saved between visits.
Start with these
Blood Test Tracker
Enter your results and see each marker against both ranges — the one your lab used, and the optimal one. Stays in your browser.
Biological Age Calculator
Twenty lifestyle and health factors, an honest number — plus an optional face scan and posture check from photos.
Longevity Score
One composite score across 11 domains, so you can see which area to work on first.
Stack Interaction Checker
Check everything you take — supplements and medications — against each other for clashes.
The rest of the toolbox
Biomarker Insights
A plain-English read on standard and advanced bloodwork.
Protocol Optimizer
A personalised plan across 6 evidence-based pillars.
Supplement Stack Builder
Evidence-graded suggestions with interaction screening built in.
Sleep Assistant
Circadian, temperature and routine changes matched to your sleep pattern.
Fasting Planner
Time-restricted eating and longer fasts, matched to your goals and markers.
Cognition Planner
Evidence-based routines for focus, memory and mental clarity.
Wearable Data Analyser
Make sense of Oura, WHOOP, Apple Watch and CGM data together.
Peptide Reconstitution Calculator
For readers already using research peptides: vial maths done safely.
Peptide Research Assistant
Ask questions of the peptide literature. Answers depend on the AI service.
Face Age Estimator
Upload a photo, get an estimated perceived age. A curiosity, not a measurement.