Side by side
The full comparison.
Polsen watches next to the Oura Ring 5, Apple Watch Series 11, and WHOOP 5.0 — every feature and spec.
What makes Polsen different
Polsen watches take a different approach from every tracker in this table. No pings, no daily scores, no streaks — they stay silent unless something genuinely needs your attention. Research-grade sensors capture raw signals every second, 24/7 — where Oura Ring 5 and Apple Watch sample at intervals — calibrated to your personal baseline, not a population average. The Reactivity Monitor™ delivers a minute-by-minute timeline of everything your body goes through, tracking stress duration, recovery time, and frequency — metrics no other tracker in this comparison captures. Free app, no subscription — and your data stored on EU-based servers, under European law.
| Smart ringOura Ring 5 | SmartwatchApple Watch Series 11 | Fitness trackerWHOOP 5.0 | ||
|---|---|---|---|---|
Features | ||||
| Reactivity Monitor™ | A minute-by-minute view of how the body responds to daily demands, distinguishing physical from mental events | |||
| Health States | Daily stress load: Resilient, High Load, Engaged, Delayed Recovery, Depleted, Heightened sensitivity | |||
Long-term states: Resilient, Overloaded, Delayed Recovery | ||||
| Stress Response | Stress response detection | |||
Stress frequency (number of stress events) | ||||
Stress duration | ||||
| Recovery Indicators | Stress Recovery (average time to return to homeostasis after stressor) | |||
HRV (at night) | ||||
| Sleep | Sleep stages and duration | |||
Awakening stage | ||||
Times awake | ||||
Sleep Latency | ||||
Sleep Restoration | ||||
Sleep Regularity | ||||
Vibration Alarm | ||||
| Heart Health | Continuous Heart Rate (minute-by-minute timeline) | |||
Resting Heart Rate | ||||
| Temperature | Skin temperature deviations (at night) | |||
| Women's Health | Menstrual cycle tracking | |||
| Activity | Steps | |||
Intense Active Minutes | ||||
Automatic detection of physical activity | ||||
Workout summary: HR zones, map | ||||
Vibrations based on HR | ||||
| Self-Regulation toolkit | Vibrations: on prolonged stress or random | |||
Feelings Check-In | ||||
Daily mood logging | ||||
CBT exercises | ||||
Live HRV Breathing Session | ||||
| Long-term trends | Overview of key metrics: current value, typical, and range variation | |||
Insights: meaningful correlations, trends, and actionable tips | ||||
Specs | ||||
| Data Collection | High data density by default: 1 Hz sampling (second-by-second), 24/7 | Data is sampled at intervals, depending on context, rather than continuously. | Data is sampled at intervals, depending on context, rather than continuously. | |
| Data privacy | Download and export your raw data anytime | |||
EU-based AWS servers (Frankfurt) with advanced encryption | ||||
GDPR-level privacy, wherever you are | ||||
| Battery life | Up to 8 days depending on model and use | Up to 9 days | <2 days | Up to 14 days (with Wireless PowerPack) |
| Water-resistant | 50m depth (5ATM): suitable for swimming and showers | |||
| Notifications | Opt-out by default | |||
| Mobile app | Free, no subscription needed | $5.99/mo or $69.99/yr (~€5.50/mo or ~€64/yr) | Free (optional only) | From $199/yr (~€185/yr) — up to $359/yr (~€330/yr) |
Battery life and subscription prices reflect current product releases: WHOOP 5.0 / MG (May 2025), Oura Ring 5 (May 2026), and Apple Watch Series 11 (Sep 2025). Competitor data is based on publicly available information at the time of publishing.
Frequently asked questions
What does this comparison cover?
Every feature and spec of a Polsen watch side by side with the Oura Ring 5, Apple Watch Series 11, and WHOOP 5.0 — from stress and sleep tracking to battery life, subscriptions, and data privacy. Battery life and prices reflect the current releases: WHOOP 5.0 / MG (May 2025), Oura Ring 5 (May 2026), and Apple Watch Series 11 (Sep 2025).
What makes a Polsen watch different from other health trackers?
Most trackers reduce your health to daily averages — sleep score, readiness, strain. Polsen's Reactivity Monitor™ tracks how your body responds to daily demands every second, 24/7, calibrated to your personal baseline, not a population average. That continuous precision is what makes Polsen's metrics meaningful: stress duration, recovery time, and frequency — and how they build into cumulative load over time, a key indicator of long-term health risk. No subscription, no gamification. Your data stored in the EU, under European law.
Does Polsen require a subscription?
No — the Polsen app is free, with no subscription needed. By comparison, the Oura app costs $5.99 per month or $69.99 per year, and WHOOP membership runs from $199 up to $359 per year. The Apple Watch app is free as well.
How does a Polsen watch measure stress?
The Polsen watch captures heart rate and movement signals every second and our proprietary Reactivity Monitor™ processes those signals into a minute-by-minute timeline of how your body responds to daily demands. Based on your personally calibrated baseline (called homeostasis), it detects stress responses, measures stress duration, recovery time, and frequency (how long your body takes to return to homeostasis). Physical activity is automatically flagged so you can read the rest of the timeline clearly, and a feelings Check-in lets you add context the sensors alone can't capture.
What happens to my data with Polsen Health?
You can download and export your raw data anytime. Polsen Health stores it on EU-based AWS servers in Frankfurt with advanced encryption and applies GDPR-level privacy wherever you are. Unlike Polsen Health, none of them offer sensor-level raw data export, and none store your data exclusively on EU-based servers.
Where can I see Polsen watches compared to one specific tracker?
Each matchup has its own page: Polsen vs Oura Ring 5, Polsen vs Apple Watch Series 11, and Polsen vs WHOOP 5.0.