The Simplest, Most Private Way to Discover What Affects
Your Health
Stop guessing what makes you feel better. Check in with how you feel in seconds, run experiments, build daily routines, and let AI reveal what actually works.
Most health apps overwhelm you with data. Health Check-In starts with one powerful question: “How do you feel?”
No account required · Your data stays on your device (read more here for details)
Your Personal Health Laboratory
From a quick check-in to AI-powered insights and a personalized daily routine.
Not “What Are Your Goals?”
What Are You Trying to Fix?
Most health apps are aspirational. Health Check-In is practical. Tell the app what's bothering you, document what you're trying, and track whether it's actually working.
Name what you want to investigate
Run an Experiment — pick a template or create your own
Check in daily — takes 10 seconds
See if your scores improve over time
Save what works as a Key Result
Run Experiments
Stop guessing whether something works. Start an experiment, test one change at a time, and let the data tell you what's actually making a difference.
Sleep
Supplements
Diet
Exercise
Mental Health
Your Personal Health Detective
Health Check-In's AI analyzes your check-ins, sleep, supplements, medications, activities, notes, and environmental factors to identify patterns you might never notice yourself. Ask follow-up questions, have multi-turn conversations, and even generate a personalized daily routine based on your data.
Private by Design
No account required, no ads, no tracking, and your health journal stays on your device unless you choose to export, back up, or use AI analysis.
Read our privacy explanation in plain EnglishNo Account Required
Start using the app immediately. No email, no sign-up, no friction.
Data Stays On Device
Your check-ins live on your phone unless you choose to back them up.
No Selling. No Ads.
We don’t sell your health data. No advertising network tracking. Ever.
Features and Pricing
The core app is free forever. Unlock the full toolkit with a one-time Pro purchase, or add AI-powered analysis with a Pro + AI subscription.
Free
$0
Free forever
- Unlimited daily check-ins with slider & notes
- Customizable positive & negative tags
- Multiple daily reminders
- Unlimited check-in history with context
- Run personal health experiments
- Export history to PDF / CSV
- Weather tracking (temp & humidity)
- Define what you’re fixing and how
- 7-day trends chart
Pro
$19.99
One-time purchase — yours forever
- Everything in Free, plus:
- My Routine — time-blocked daily schedules with reminders
- Health app integration (Apple Health, Oura, Google Health)
- HRV, resting heart rate, deep sleep & REM tracking
- Sleep score breakdown with targets
- Air quality (AQI) & pollen tracking
- Supplement & medication reminders
- Experiment templates library
- Extended trends (30, 90, 180 days, 1 year)
- Insights & Key Results
- Cloud backup & restore
- Export data for your doctor
Your complete personal health laboratory. Perfect if you prefer to share data with a health professional or work things out on your own.
Get StartedPro + AI
$4.99/mo
or $44.99/year — includes all Pro features
- Everything in Pro, plus:
- AI-powered pattern analysis & correlations
- Preset analyses: Key Insights, Sleep & Energy, Correlations, Issue Summary
- Multi-turn conversations with chat history
- AI-generated personalized daily routines
- Personalized health suggestions
- Export & share AI conversations
Why I Built This
Hi, I'm Robin. For years I struggled with brain fog, tiredness, insomnia, and exercise fatigue. I knew something was off, but I couldn't pinpoint what was helping and what wasn't. None of the health apps I tried asked the simple question: how do you actually feel today?
So I built Health Check-In as my own personal health laboratory—and it worked.
Read My Full StoryWe'd Love to Hear From You
Found a bug? Have a feature request? Questions about the app? We're always listening and working to make Health Check-In better.