How AI Calculates Your Sleep Score and What It Actually Means
Your wearable gives you a number every morning. But what goes into that score? We break down the science of sleep staging, HRV, and how AI interprets your night.
Only 500 founding spots available. Lock in lifetime pricing before launch.
NexFlow
Only 500 founding member spots
Personalized health experimentsKnow what actually works for your body.
Stop guessing. Pick one habit, run a 14-day experiment, and see real proof of what works. No wearable required (but it helps).
Founding members get lifetime pricing. No credit card required.
How it works
No complicated setup. No overwhelming dashboards. Just a simple process to find out what works for you.
1
Connect (or don't)
Sync your Apple Watch or Oura Ring for richer insights. Or skip the wearable and use manual check-ins. Either way works.
2
Pick one habit to test
Cut caffeine after noon. Try a new sleep schedule. Add morning walks. Choose something you've been curious about.
3
Run a 14-day experiment
We track your sleep, energy, and focus throughout. No journaling required. Just live your life and let the data accumulate.
4
See what actually changed
Get clear before-and-after results. Did your deep sleep improve? Did your energy crash disappear? Now you know.
Your data stays yours. Encrypted, never sold, deletable anytime. Not medical advice. Learn more about our approach
Working with faculty advisors at top universities
Finally answer the questions you've been asking
Run simple 14-day experiments on the habits that matter to you. Get real answers, not more data.
"Does my morning routine actually help?"
Test whether that 5am wake-up, cold shower, or meditation is improving your focus or just making you tired.
"Should I cut caffeine after noon?"
Find out if your afternoon coffee is really hurting your sleep, or if that's just something people say.
"Why do I crash at 2pm every day?"
Experiment with lunch timing, meal size, or a midday walk to see what actually fixes your afternoon slump.
"Is this supplement doing anything?"
Stop guessing if magnesium or ashwagandha is worth it. Run a controlled test and see real changes (or not).
"What's my ideal sleep schedule?"
Test different bedtimes and wake times to find when you actually feel most rested and alert.
"Does alcohol really affect my sleep?"
Compare two weeks with and without that evening glass of wine. See the difference in your own data.
Questions? Answered.
Everything you need to know about health experiments with NexFlow.
NexFlow turns your wearable health data into personalized experiments. You connect your Apple Watch or other wearable, choose a habit to test (like adjusting caffeine timing or sleep schedule), and run a 14-day experiment. NexFlow analyzes your sleep, energy, and focus data to show you exactly what changed. You get proof, not guesses.
Most health apps track your data passively without helping you understand cause and effect. NexFlow is built for wearable health experiments. You change one variable, and we isolate its impact on your sleep, energy, and focus. Instead of endless dashboards, you get clear before-and-after comparisons that tell you what actually works for your body.
A wearable like an Apple Watch, Garmin, or Oura Ring gives you the richest data for experiments. However, NexFlow also works with Apple Health data from your phone or simple manual logging. The more consistent data you have, the clearer your experiment results will be.
NexFlow is designed for high-performing knowledge workers who already wear a smartwatch and want data-backed answers instead of generic wellness advice. If you've ever wondered whether that supplement, sleep hack, or morning routine actually helps your energy and focus, NexFlow gives you the proof.
NexFlow is a paid product with no free tier. This keeps the product focused on serious users who want real results from their wearable health experiments. It also ensures we never rely on ads or selling your data. Founding members lock in lifetime pricing.
You can connect your wearable data, set up personalized 14-day health experiments, see clear before-and-after comparisons of your sleep, energy, and focus, and chat with an AI health assistant about your patterns. Everything is designed to help you learn what works for your unique body.
Most users see meaningful insights by the end of their first 14-day experiment. The app establishes your baseline during the first few days, then tracks changes throughout your experiment. By day 14, you'll have clear data on how that habit affected your sleep quality, energy levels, or focus.
No. NexFlow is for lifestyle and habit experiments only. It does not diagnose, treat, or provide medical advice. Think of it as a personal lab for testing routines. For any health concerns or medical decisions, always consult with your doctor.
Yes, your data privacy is a core principle. All wearable health data is encrypted, never sold to third parties, and never used for advertising. You can delete your account and all associated data at any time. We believe your health data belongs to you.
You can run experiments on caffeine timing, sleep schedules, step counts, exercise routines, screen time limits, cold showers, meditation, alcohol-free windows, supplement timing, and dozens of other daily habits. If you can track it and change it, you can test whether it actually affects your sleep, energy, or focus.