How the Builder works
The Stack Builder is a thin layer over the 3-Layer Method we teach in the course. Every personal AI health stack has the same shape — one tool for sourced research, one for the long-memory ledger, one for drafting protocols — but the right tool in each slot depends on what you actually want to do and how comfortable you are with chat AI today.
The Builder asks the three questions that matter, then returns the three free tools we'd recommend right now (the recommendations update as the landscape shifts). It also writes your starter prompt for you — so you have something working, in your favourite chat tool, before you close the tab.
Why a stack instead of an app
- The free tier of every tool is sufficient for personal use.
- You keep your conversations and your data — not a vendor.
- When a model improves or a new one launches, your method survives. You upgrade without migrating.
- EU-built guidance, GDPR-first by design.
Frequently asked
- What does the Health Stack Builder do?
- The Health Stack Builder is a free, two-minute interactive picker. You choose your goal, the data you already have, and your comfort level with chat AI. It returns the three free chat tools you should start with — one for research, one for ledger, one for protocol — and a copy-paste starter prompt tuned to your situation.
- Is the Stack Builder really free?
- Yes. No card, no signup wall to use it. You can optionally enter your email to receive your stack and the free 10-Day Challenge. We never resell your data.
- Does it recommend any paid tools?
- No. Every tool the Builder recommends has a free tier sufficient for personal use. Paid plans are mentioned only when they materially help heavy users — never as a requirement.
- What if my goal isn't listed?
- Pick the closest one. The 3-Layer Method is goal-agnostic; the starter prompt adapts. If your goal is highly specific (e.g. fertility, perimenopause, GLP-1 protocol) you'll find a dedicated topic page in our AI-for library.
Adjacent reading
- Personal Health Stack — the long-form pillar.
- Health OS — the operating-system frame.
- Claude for Health — why Claude is the go-to ledger tool.
- The Free 10-Day Challenge — build the full stack with daily lessons.
- Suggested for you — not sure where to start? Personalised picks across the site.
