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Pulsyn

Rune 1

Privacy-first smart ring

$160 USD

1-year warranty No subscription required Free US shipping
iOS Android
Visa · Mastercard · Amex · Crypto
Color / Finish

Add-ons

7 Days Battery Life
2.4–4g Weight
5ATM Water Resistant
On-Device AI Processing

The Industry Problem

Your biometrics on someone else's server.

Cloud wearables store your heart rate, sleep, and fertility data on infrastructure you don't control. One contract, one subpoena, one breach — and it's not yours anymore.

Zero-Knowledge Architecture

Your data stays on your device.

Pulsyn processes everything on-device by default. Pro users can opt into encrypted cloud sync — end-to-end encrypted, with keys only you control. We can't read it even if we wanted to.

Precision Health Tracking

Every signal. Processed on your finger. Never sent anywhere.

Stress + Recovery

24/7

Know Your Stress Before You Feel It

Continuous heart rate and HRV tracking reveals your body's stress response and recovery state, so you can act before burnout hits.

SpO₂ Accuracy

+/−2%

Breathe Easy, Day and Night

Real-time blood oxygen monitoring highlights respiratory changes and altitude effects while you sleep or train.

Temp Precision

+/−0.1°C

Catch Illness Before Symptoms Start

Detects subtle skin temperature shifts that can signal illness onset or recovery before you notice.

Sleep + Activity

5 stages

Sleep Scored. Activity Logged. Zero Effort.

Auto-detects activity type and classifies each sleep stage so your day and night are tracked without manual input.

Temperature Trends

Cycle-aware

Women's Health, In Sync

Temperature trends help reveal cycle patterns and fertile windows, adding context to energy and recovery.

Sleep Intelligence

You spend 8 hours in bed. We track every minute of it.

Sleep stages, HRV, skin temperature, SpO₂, and respiratory rate — analyzed on your device. No cloud required.

Last Night

Bedtime 10:42 PM · Wake 6:31 AM

91 Score

Your best in 11 days

Deep Sleep

1h 58m

23% of night

REM Sleep

2h 24m

28% of night

Avg HRV

54ms

+12% vs baseline

Skin Temp

36.8°C

0.1° below avg — good

Processed on-device · 0 bytes uploaded

Sleep Staging

Light · Deep · REM · Awake tracked continuously

Recovery Score

Wakes you informed, not just awake

Trend Intelligence

Patterns across 30, 60, 90 days

vs. Oura

Oura requires a $5.99/month membership to see your sleep breakdown. Pulsyn shows it all, always, free.

● RUNE 1 · All sensors active · Sampling at 2 Hz 10 streams

Precision Biometrics

Every signal your body sends. Captured on your finger.

10 biometric streams. Processed locally. Available the moment you wake up.

Training with Pulsyn — heart rate, oxygen, stress tracked in real time
Live tracking

Heart rate, oxygen and stress. Tracked while you push.

VITALS
●
Heart Rate
PPG Sensor
0 bpm
● LIVE
Resting HR
PPG Sensor
0 bpm
24 HR AVG
Blood Oxygen
PPG Sensor
0 %
EVERY 15 MIN
Stress Index
HRV Derived
0 /100
CONTINUOUS
Recovery — rest and renewal
Rest & renewal

Analysed while you sleep. Ready when you wake up.

RECOVERY
●
Readiness Score
Composite
0 /100
MORNING
3 more streams
Movement — running with Pulsyn
In motion

Every step. Every calorie. Always on your finger.

MOVEMENT
●
Steps
Accelerometer
0 steps
CONTINUOUS
3 more streams

10 biometric streams · 7-day local history by default · Exportable anytime

On-Device AI

Meet Milo — Your AI Health Coach.

Runs entirely on your phone. No internet. No subscription. No one listening.

  • Learns your patterns without uploading them
  • Answers health questions in real time
  • Available offline — no Wi-Fi needed
Explore Milo
Milo · Active Today
  • 6:12 AM INSIGHT Sleep quality 91/100 — your best in 11 days. HRV 14% above baseline.
  • 6:12 AM WAYPOINTS Peak focus window: 8:30–11:00 AM. Caffeine cutoff: 1:30 PM today.
  • 9:47 AM ANOMALY Resting HR elevated +8 bpm vs baseline. Monitoring for pattern.
  • 11:03 AM RESOLVED HR returned to baseline. Likely stress response — logged.
  • 2:18 PM ALERT Caffeine cutoff passed 48 min ago. Next intake will impact deep sleep.
  • 4:55 PM DETECTION Skin temp +0.4°C above 7-day baseline. Potential early illness signal — watching.
  • 9:31 PM COACHING HRV trending low this week. Recommend low-intensity tomorrow. Sleep window: 10:15 PM.
  • 6:12 AM INSIGHT Sleep quality 91/100 — your best in 11 days. HRV 14% above baseline.
  • 6:12 AM WAYPOINTS Peak focus window: 8:30–11:00 AM. Caffeine cutoff: 1:30 PM today.
  • 9:47 AM ANOMALY Resting HR elevated +8 bpm vs baseline. Monitoring for pattern.
  • 11:03 AM RESOLVED HR returned to baseline. Likely stress response — logged.
  • 2:18 PM ALERT Caffeine cutoff passed 48 min ago. Next intake will impact deep sleep.
  • 4:55 PM DETECTION Skin temp +0.4°C above 7-day baseline. Potential early illness signal — watching.
  • 9:31 PM COACHING HRV trending low this week. Recommend low-intensity tomorrow. Sleep window: 10:15 PM.

Milo ran 7 actions today. You didn't ask for any of them.

DETECT

detect_temp_baseline

Skin temp: 37.2°C · Δ+0.4°C vs 7-day avg

CROSS-REFERENCE

query_history

Found: high stress score 3 days prior, sleep dip yesterday

ASSESS

assess_risk

Pattern matches early illness onset in 68% of historical cases

SURFACE

push_insight

Flagged for monitoring. Alert sent. No action required from user.

Ran on-device in 340ms. No data left your phone.

Agent Skills

Or connect with your own agent.

Pulsyn Agent Skills work with any compatible AI — give it secure, token-based access to your health data and start asking real questions. No subscription. Your data, your agent.

Works with any platform that supports SKILL.md.

1

Sync Your Ring

Rune 1 syncs your health data securely to your phone via Bluetooth.

2

Install a Skill

Add the Pulsyn skill to any Agent Skills–compatible AI in seconds.

3

Generate a Token & Chat

Create a secure access token in the Pulsyn app and start asking questions about your real health data.

See All Integrations

Also works with ChatGPT, Manus, Kimi Claw, Max Claw & more.

Full Feature Breakdown

Every sensor. Every ring.

Feature Pulsyn Oura Ring­Conn Ultra­human
Continuous Heart Rate (PPG)
HRV Tracking
SpO₂ Blood Oxygen
Skin Temperature
5-Stage Sleep Tracking
Activity Auto-Detection
On-Device AI Coach
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—
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Works Fully Offline
—
—
—
No Subscription Required
—
Local-First Data Storage
—
—
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Optional Encrypted Cloud Backup
—
—
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Specs sourced from official product pages and independent reviews (Q1 2026). Oura 3-year cost reflects $449 ring + 36×$5.99 membership ($664.64 total). Oura's DoD/Palantir enterprise platform is a separate B2B product — consumer data is not shared per Oura's published privacy policy. Ultrahuman Ring AIR is not currently sold in the US market. RingConn battery claim is the manufacturer's stated maximum; actual varies by ring size.

The world already agrees. We just built for it.

We didn't invent the problem. We just refused to ignore it.

The next battleground in wearable health tech isn't accuracy — it's ownership. Who controls the data a device generates determines who it actually serves.

— MIT Technology Review, 2024

Saying you don't care about privacy because you have nothing to hide is like saying you don't care about free speech because you have nothing to say.

— Edward Snowden — Permanent Record, 2019

If we accept as normal and unavoidable that everything in our lives can be aggregated and sold, we lose so much more than data. We lose the freedom to be human.

— Tim Cook — CPDP Conference, 2021

These are public statements from their respective sources. None of these individuals endorse or are affiliated with Pulsyn.

Questions.

500 units. Launching Q2 2026.

Be among the first to get yours.

Free US Shipping 30-Day Returns 1-Year Warranty

$160

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