Build a personal heart-health tracker with Claude
A 73-year-old used Claude to turn a spreadsheet into a phone-ready app for logging health readings and daily habits after a hospital stay.
- What they did
- Following a dehydration-related hospital stay in November 2025, the developer started from a spreadsheet and spent months iterating with Claude. The result was ClinBridge, a progressive web app that lets them record blood pressure readings, fluids, body weight, pulse, symptoms, meals, and activity. Claude assisted with both coding and phrasing, while the developer set the goals and features. The app can be installed on a phone, works without a connection, and keeps records on the device.
- How it went
- After about five months, the project had reached version 9.9.25. It is free and open source, and the aim was to help the developer avoid another preventable health episode. The biggest issue in the discussion was whether the story was believable; many readers were skeptical, though some who examined the code said the app looked genuine and harmless.
- Tips
- Start by listing the exact measurements and notes you want to capture each day, then have the agent build only that. For anything related to health data, check where the information lives and stop before any step that would share it or make it public.
Try it yourself with Claude
Help me make a simple tracking app for [condition or recovery situation] with no coding background required. Begin by asking what I need to record each day, then help me design a phone-friendly app for [blood pressure, body weight, fluid, pulse, symptoms, meals, activity] or similar fields. Break the work into small steps, explain everything in plain language, and after each major step, pause until I approve the next one. If a step would send, publish, erase, or share anything, stop and ask me to confirm first. Try to keep the data stored locally and make the app usable on [phone/computer], including offline use if possible.
Fill in the [brackets]. Agents can make mistakes, so review anything before it is sent, paid or deleted.
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