Quantified Science for the Lazy
Your personal health journal.
Discover the hidden connections between your sleep, energy, and habits—without the obsession.
Free • No credit card required
Health tracking shouldn't feel like a second job.
Most apps bombard you with charts, scores, and red alerts. BioLogger is different. It's a quiet space to record what matters and let the insights come to you.
Fragmented
Sleep data here, food logs there. You're the one stuck trying to connect the dots.
Overwhelming
Dashboards that look like stock tickers. You want health, not anxiety.
Disconnected
Knowing you slept 6 hours is useless if you don't know *why* or how it affected your day.
It connects the dots for you.
Our Smart Correlation Engine quietly analyzes your entries to find patterns you might miss.
Automatic Discovery
"Your reaction time is 15% slower after poor sleep."
You don't need to be a data scientist. Just log your day, and BioLogger will surface the insights that actually impact your wellbeing.
Holistic Context
See how your morning coffee affects your evening glucose, or how your stress levels impact your workout recovery.
Everything is connected. BioLogger helps you see the whole picture, not just isolated metrics.
A different kind of health app.
Growth, not Guilt
We don't use red text or scary alerts. Your health is a journey, not a pass/fail test. We're here to support your curiosity, not judge your choices.
Your Data is Yours
No walled gardens. Export your data to CSV anytime. We believe you should own your health history, no matter what app you use.
Accessible to Everyone
You shouldn't need a $400 ring to understand your body. BioLogger works with the devices you have, or just your own observations.
Completely free.
No credit card. No hidden fees. Just sign up with your Google account.
Full Access
Early users grandfathered in—keep free access even if pricing changes later.
- ✓ Manual entry for all metrics
- ✓ AI Chat with your data(token limits apply)
- ✓ Unlimited history
- ✓ Advanced Correlation Engine
- ✓ PDF/CSV Imports
- ✓ CSV Export
- ✓ All future updates
AI chat features use tokens and may have usage limits. All other features are unlimited. Early users keep free access to all features forever, even if we introduce paid tiers for new users later.