Built by one person who got tired of apps that track without telling you anything
MetabolicOS is a free metabolic health tracker. No account required. No subscription. Your data never leaves your device.
Why MetabolicOS exists
Most free health apps are one-metric tools. You track weight in one app, blood pressure in another, nutrition in a third. None of them talk to each other. And none of them tell you what your numbers actually mean.
Metabolic health is not one number — it's the relationship between several. High blood pressure and high sodium intake are connected. Weight and A1C are connected. Cholesterol and diet are connected. MetabolicOS is built on the premise that tracking these things together, in one place, reveals patterns that individual apps miss.
The app is free because health tracking should not be a subscription. Your data is stored locally because your health data belongs to you, not to a company's server.
What this app is — and isn't
MetabolicOS is a personal health logging tool. It helps you track, visualize, and understand your own metabolic numbers over time. It is not a medical device. It does not provide diagnosis, treatment, or medical advice. The goal is to give you better data to bring to conversations with your doctor — not to replace those conversations.
Everything in the app and on this blog is written to be accurate and evidence-based. When the research is uncertain, we say so. When something requires a doctor's input, we say that too.
The principles behind it
Privacy by default
All data stored in your browser's localStorage. No accounts, no servers, no way for us to access your data.
Free forever
Core tracking is permanently free. Health data shouldn't be locked behind a monthly fee.
Insight, not just data
Numbers without context are noise. MetabolicOS connects your metrics to give you signal.
Doctor-ready
Generate a Health Report you can share with your provider. Track trends, not just snapshots.
Where this is going
MetabolicOS is actively developed. Upcoming additions include blood glucose tracking, medication logging, and deeper AI-powered pattern detection. If you have feedback, a feature request, or just want to say what's working for you, reach out.
If you want to follow along as the app grows, the blog is where I publish research-backed guides on the health topics the app covers.
Try the app
Free, no account required. Runs in your browser or install as a PWA on your phone.
Launch MetabolicOS →