Pulse Contrast Bundle
Two Bluetooth sensors — one for sauna, one for plunge — plus the Yutori app. Drop the plunge sensor in your cold tub, mount the sauna sensor at bench height, and track alternating hot and cold as a single contrast session with Live Coach guidance and an emergency-aware safety layer.
Ships directly · No subscription required
What’s Included
Everything for hot, cold, and the transition.
The bundle ships two sensors identical to the individual Pulse Sauna and Plunge Sensors, paired under one account for contrast tracking.
Pulse Sauna Sensor
Temperature + humidity at bench height. IP67+ polycarbonate enclosure rated to 120 °C. Mounts with included suction cup.
Pulse Plunge Sensor
Water temperature to ±0.1 °C. IP68 submersible enclosure. Drop it in or mount just below the waterline.
Yutori App
Both sensors connect to one account. Free tier includes live temp for each. Premium unlocks contrast session tracking, coaching, and trends.
Contrast Sessions
Hot and cold, tracked as one practice.
The app detects when you move between sauna and plunge and stitches the rounds into a single session with timing, temperature curves, and biometric overlays.
Round Detection
The app detects transitions between heat and cold automatically — no manual tagging. Each round is logged with environment temperature and duration.
Dual-Sensor Dashboard
See sauna and plunge temperatures simultaneously on one screen. Know exactly what you’re walking into before each round.
Contrast-Aware Coaching
Live Coach adjusts timing windows and commentary based on where you are in the hot–cold cycle, your cumulative heat/cold exposure, and current biometrics.
Contrast Trends
Total rounds per session, average round durations, HR/HRV across the hot–cold transition, and adaptation over weeks.
Safety Across Both Environments
The same emergency workflows run in both sauna and plunge rounds. Heart-rate ceiling alerts, overexposure timers, and escalation to emergency contacts.
Depends on your phone, sensors, and network. This is a backup layer, not a medical monitor or replacement for supervision.
Pricing
$157, shipped.
One-time purchase for both sensors. The free tier includes live temperature from both sensors and basic session history. Premium coaching is optional.
Contrast Bundle
Two sensors (sauna + plunge), live temperature for each, automatic contrast session logging, basic session history.
Yutori Premium
HR/HRV integration, Live Coach for sauna, plunge, and contrast, long-term trends, AI insights, protocols, and safety workflows.
Premium is $4.97/month or $39.99/year. Covers all sensors on your account. Individual sensors also available at $87 each.
Specifications
Full specs.
| Product | Yutori Labs: Pulse Contrast Bundle |
| Contents | 1× Sauna Sensor + 1× Plunge Sensor + suction-cup mount |
| Sauna sensor | Temperature + humidity, IP67+, −40 to 120 °C, suction-cup mount |
| Plunge sensor | Water temperature ±0.1 °C, IP68 submersible, −40 to 85 °C |
| Battery | CR2477 coin cell per sensor, user-replaceable, ~1–2 years each |
| Radio | BLE 5.0, ~5–20 m indoor/outdoor range per sensor |
| Platforms | iOS; Apple Health integration, others via connectors |
| Contrast tracking | Automatic round detection when both sensors are paired |
| Premium | $4.97/mo or $39.99/yr — covers all sensors on the account |
Important
Safety & limitations.
The Pulse Contrast Bundle and the Yutori app are tools for awareness, not guarantees of safety.
Not a medical device
The sensors and app are not medical devices and do not diagnose, treat, cure, or prevent any disease. They should not replace medical advice or supervision.
Connectivity-dependent alerts
Emergency workflows depend on your phone, sensors, and network. If connectivity is poor, alerts may be delayed or unavailable.
Thermal stress risks
Alternating extreme heat and cold amplifies cardiovascular stress. Consult a physician before starting contrast therapy, especially if you have heart conditions, blood pressure concerns, or are pregnant.
Heed your own limits
If you feel dizziness, chest pain, numbness, confusion, or distress in either environment, stop immediately and seek help — regardless of what the app shows.
One kit for hot and cold.
$157, one-time. Two sensors, one app, contrast session tracking from day one.