Live
FastingWorks
Fasting windows and meals, mapped to how you sleep and feel the next day. The patterns become obvious.
Open appTab0 — personal health intelligence
See what actually moves your health.
Fasting, meals, sleep, recovery. Tab0 connects your signals into one model of you — so decisions stop being guesses.
9:41
Today
Good morning
February 2026
Intermittent FastingFat Burning
Fat Burning
89%•2h 0m left
Today's Meals3 logged
Greek Yogurt BowlBreakfast • 3 items • 8:30 AM
417kcal
Grilled Salmon SaladLunch • 3 items • 12:30 PM
545kcal
Apple & Almond ButterSnack • 2 items • 3:30 PM
285kcal
Caffeine2 logged
185/400
Green Tea35 mg• 2:00 PM
Americano150 mg• 9:00 AM
CaloriesDaily Goal
1,247remaining
Eaten1,247kcal
Limit2,000kcal
Macros
Protein68g136%
Carbs142g57%
Fat45g69%
Intake TrackingDaily Limits
Sugar
56%28g
Sodium
63%1450mg
Cholesterol
62%185mg
Fiber
72%18g
Key Micronutrients
Vitamin D
60%12.0mcg
Calcium
73%950mg
Magnesium
76%320mg
Iron
78%14.0mg
Zinc
86%9.5mg
Vitamin C
94%85.0mg
Products
One signal per app. One picture of you.
Each app goes deep on a single health signal. Together they build the complete picture.
Coming soon
GlucoseWorks
Know which meals spike your glucose before they happen — forecasts built on your data, not population averages.
Beta
HRVWorks
Recovery capacity in context: HRV interpreted alongside sleep, stress, and training load.
Join the betaMethod
From data to decisions.
Most health apps stop at charts. Tab0 is built to answer one question: what should you change next?
- 01
Track
Log meals, fasting windows, and habits. Wearable data syncs automatically from Apple Health.
- 02
Connect
The engine maps inputs to outcomes — how last night's meal shaped this morning's glucose, sleep, and energy.
- 03
Act
Get clear, evidence-based suggestions on what to adjust and when. Then watch the results.
Built on principles, not hype
- Research-backed
- Every feature starts from peer-reviewed evidence. We cite sources and document how research becomes product logic.
- Private by default
- Health data stays on your device. Core analysis runs locally — no cloud uploads required.
- Transparent method
- You can see why the app recommends what it does. No black boxes, no unexplained scores.
Company
Tab0 is a small, high-conviction team building a personal health operating system — peer-reviewed research translated into product logic, models that run on your device, and software we use on ourselves every day.
- Dogfooding
- We use our own products daily. Internal friction directly shapes what we build next.
- Compounding
- Each unit of work makes the next one easier. Lessons become reusable standards.
- End-to-end
- Own outcomes from hypothesis to shipped behavior and measured impact.
We hire rarely and deliberately.
If you work at the intersection of health science and consumer software, we'd like to hear from you.