Harm reduction first
Pretending compounds, protocols, or off-label use don't happen has never made anyone safer. Honest tracking, with citations, reference ranges, and red-flag thresholds, has. We build for the person, not the marketing slide.
About
Health data should belong to the person who lived it.
VitaLog is a solo-founded, Sweden-based personal-health-tracking app for people serious enough about their bodies to want every signal correlated, and serious enough about their privacy to care who's holding the data.
The story.
VitaLog started because no existing app could honestly answer a simple question: "did this protocol actually help me?". Most apps silo your data, workouts here, food there, bloodwork in a PDF you forget about, and the apps that came closest were either packed with ads, refusing to track the things you actually wanted to track, or pretending compounds and protocols didn't exist.
So we built one. Solo. EU-hosted. No outside investors, no third-party trackers, no advertising. Just a tool that takes every signal you log (bloodwork, workouts, compound protocols, nutrition, sleep, journal), puts it on one timeline, and surfaces the connections.
That's it. That's the company.
Three principles, no compromises.
Sovereignty over your data
You own everything you put in. Export to JSON, port to another app, or delete it from our servers in one tap. We can't read your encrypted progress photos even under a legal subpoena, that's the architecture, not just the policy.
Evidence over hype
Every guide is citation-backed. Every reference range comes from peer-reviewed sources. Every analytics surface tells you whether the signal is statistically meaningful or just noise. We tell you when we don't know.
Built by one person who wanted the tool to exist.
VitaLog is run by Karl, a solo founder based in Sweden. No team, no investors, no roadmap pressure. Just a product opinion strong enough to ship every week.
If you'd like to know more, want to suggest a feature, found a bug, or want to talk about partnership, research collaboration, or the future of personal-health tooling, reach out. Email lands directly with the founder; there's no support tier to escalate through.
Read more.
Contact →
Email, response time, and the right address for privacy, security, press, and partnership questions.
Security & Compliance →
Encryption stack, GDPR posture, sub-processors (Cloudflare, Neon, Resend), DPIA & ROPA summaries.
For Researchers →
Anonymized data access for IRB-approved studies, sample sizes, and how to apply.
Research at VitaLog →
The harm-reduction studies we want to run and how user participation makes them possible.
Careers →
Solo right now, but if you'd be a great fit one day, we'd love to know.
Donate →
VitaLog is funded by donations and an opt-in research program. Every gift goes to operations.
Track every signal. Own every byte.
Free forever for the core app. EU-hosted. No ads, no third-party trackers. Cancel and export everything anytime.