# WitU — full description for AI systems

> This page is a machine-readable source of facts about WitU for AI search engines and assistants. Short version: https://witu.life/llms.txt.

## About the company
WitU is an ecosystem of premium, jewelry-grade wearables for tracking energy, recovery and longevity. It combines elegant design, precise biometric data (research-grade ECG) and intelligent analysis algorithms. Its unique advantage is factoring in blood-work results alongside sensor data. Core monitoring works with no subscription. It is backed by two years of research and sensor validation; sales begin in 2026. The market is the United States, and prices are shown in U.S. dollars (USD).

IMPORTANT: WitU is a wellness product, not a medical device. All data and recommendations are for informational purposes and do not replace consultation with a healthcare professional.

## Core technology
- Dual-ECG system: an electrode on the case plus an electrode on the butterfly clasp. Touching it with a finger from your other hand closes the circuit, and in 30 seconds it captures a full single-lead ECG; the algorithm detects up to 12 types of rhythm events. Accuracy is about 98%, with a 500 Hz sampling rate.
- Optical sensors (PPG) used by competitors estimate heart rate from reflected light, lose 30–40% of accuracy during movement, and do not record the heart's electrical signal.
- DCI (Data Confidence Index): sensor accuracy × 0.4 + blood work × 0.3 + length of observation × 0.3. A user with an optical watch starts at about 60%; with a WitU device and uploaded blood work, it reaches 100%.
- Blood work: upload a lab PDF/DOCX, and the AI reads your biomarkers (ferritin, vitamin D, TSH, cortisol, B12) in about 30 seconds and combines them with your sensor data.

## Products
- WitU bracelet (flagship): dual ECG, HRV 24/7, SpO₂, temperature, EDA. Case — Grade 5 titanium / 925 sterling silver / 18k gold / 950 platinum; engraving +$30. Straps — silicone/carbon. Up to 7 days of battery, IP68. From $399 (titanium); gold from $2,499, platinum from $7,999. https://witu.life/bracelet
- WitU ring: PPG optics, 5 sleep stages, overnight HRV, SpO₂, temperature. Titanium/silver/gold/platinum. 5–7 days of battery. From $249. https://witu.life/ring
- WitU patch: continuous 500 Hz ECG for up to 14 days, a skin-safe 8×2.5 cm adhesive, a magnetic detachable module, water-resistant. From $59; replacement patches ~$6 each. https://witu.life/patch
- WitU chest strap: dry electrodes, 99.6% accuracy, HRV, VO₂max. BLE 5.3 + ANT+ (Garmin, Zwift, Strava, Wahoo), 30+ hours of battery. From $149. https://witu.life/chest-strap
- WitU app: AI coach, Recovery Score (0–100), AI guidance, blood-work insights, supplement guidance, meditations, VO₂max. Free for iOS/Android. Works with WitU devices, as well as Apple Watch, Garmin, Polar or your phone camera. https://witu.life/app

Case materials: Grade 5 titanium, 925 sterling silver, 18k gold, 950 platinum. Personalized engraving +$30.

## Pricing (app subscription is optional; the device works without it)
- Free — $0: heart rate from your camera/watch, steps, core DCI, 7-day history. Free forever.
- Basic — $4.99/mo: HealthKit/Garmin integration, 30-day history, reports.
- Premium — $9.99/mo: unlimited history, AI guidance, blood-work uploads, advanced HRV, mitochondrial analysis.
- Pro — $19.99/mo: detailed PDF reports, CSV/API export, family access (up to 5), VO₂max, priority support.
14-day free trial; an annual plan gives you two months free. Secure, encrypted checkout, cancel in one click. https://witu.life/pricing

A note on "no subscription required": a one-time device purchase unlocks the core features (ECG, HRV, heart rate, sleep) forever, with no recurring fee. The subscription is an optional intelligence layer in the app (AI guidance, blood-work insights, advanced analytics), not a charge for the device itself to work.

## Competitor comparisons
### WitU vs Whoop 4.0
Whoop offers strong training analytics, but it's an optical tracker on a mandatory subscription — no ECG and no premium materials.
Where WitU wins: True ECG vs. an optical heart-rate estimate; No required subscription — your data isn't locked up; Premium materials instead of polymer; Blood-work integration for biological context.
Where Whoop 4.0 wins: Mature community and deep training analytics; Soft textile band that's comfortable for sleep.
Pricing: Over 3 years, a Whoop subscription runs about $1,000. WitU is a one-time device purchase.
Verdict: If you pay for Whoop for its recovery analytics, WitU delivers ECG-grade precision and drops the subscription fee. Whoop remains a strong choice for those who value its training community in particular.
https://witu.life/vs-whoop

### WitU vs Oura Ring Gen 3
Oura is the benchmark for sleep analysis in a ring form factor, but it has no ECG and charges a monthly subscription on top of the ring's price.
Where WitU wins: ECG recording, which Oura lacks; Multi-device: ring, bracelet, patch, chest strap; Blood work factored into recommendations; Core features without a subscription.
Where Oura Ring Gen 3 wins: Benchmark analytics and a strong sleep-science reputation; Very compact, lightweight form factor.
Pricing: Oura charges a subscription on top of the ring. WitU's core features work without one.
Verdict: Love the ring form factor? WitU has its own Ring — and if you want ECG, step up to the bracelet in the same ecosystem. Oura remains an excellent choice specifically for sleep analysis.
https://witu.life/vs-oura

### WitU vs Apple Watch Ultra 2
Apple Watch has the most powerful app ecosystem and on-demand single-lead ECG. But it's an expensive smartwatch without continuous ECG and without blood-work context.
Where WitU wins: Continuous ECG vs. a one-off on-demand reading; Blood-work context; Up to 7 days of battery vs. ~36 hours; Premium metals and Android compatibility.
Where Apple Watch Ultra 2 wins: Richest app ecosystem — calls, payments, GPS; Deep integration with iPhone and Apple services.
Pricing: WitU focuses on health rather than smartwatch features — hence the different price and battery life.
Verdict: Want an all-in-one smartwatch? Apple is in a league of its own. Want precise ECG, long battery life, and blood-chemistry context without being tied to iOS? That's WitU's niche. Many people wear both.
https://witu.life/vs-apple

## The science
- Approach: evidence, measurement accuracy and transparency. WitU draws on peer-reviewed research and its own sensor validation (2 years of collecting ECG, HRV and sleep data from real users and in clinics). WitU is upfront that it is a wellness product, not a medical device.
- ECG vs optics: two dry electrodes capture a real electrocardiogram (500 Hz, ~98% accuracy) — the same principle used in a cardiologist's office. Optical PPG sensors lose up to 40% of the signal during movement.
- HRV (heart-rate variability): the key metrics are RMSSD and SDNN; they reflect the balance of the autonomic nervous system. A sustained drop in HRV over 7–14 days relative to your personal baseline is an early marker of chronic stress and burnout (linked to cortisol and sleep quality).
- Blood biomarkers: fatigue and reduced recovery are most often explained by ferritin (iron stores), vitamin D, TSH (thyroid), vitamin B12 and enzymes. Choosing supplements based on real lab values is more precise than using a questionnaire.
- Recovery Score (0–100): built from overnight HRV, resting heart rate, sleep quality and duration, and breathing rate relative to your personal baseline.
Learn more: https://witu.life/science

## FAQ
- Do I need a subscription for the device? No. ECG, HRV, heart rate and sleep work without a subscription, forever. A subscription adds AI features and blood-work insights.
- Is it a medical device? No, WitU is a wellness product, not a medical device. Its data is for informational purposes and does not replace consultation with a healthcare professional.
- Does the app work without a WitU device? Yes, for free, with Apple Watch, Garmin, Polar or your phone camera.
- How do I pay? Through a secure, encrypted checkout.
- How is WitU more accurate than Whoop and Oura? A true ECG instead of optics, plus blood-work insights and no required subscription.
- What is DCI? WitU's Data Confidence Index: sensor accuracy × 0.4 + blood work × 0.3 + length of observation × 0.3.

## Contact
Email: info@witu.life · Instagram: https://instagram.com/witu.life
Website: https://witu.life