Your body, translated on Apple Watch.
Sereno reads the signals your Apple Watch already captures, then turns them into a clear weekly reading. Heart rate variability, heart rate, sleep, activity, and timing are brought together so you can see what changed, when it changed, and what may be shaping it.
How it works
Wear your Apple Watch
Sereno reads HRV, heart rate, sleep, activity, and timing signals from Apple Health. No manual check-ins or extra hardware.
Read the signal
The Watch app shows your current state, recent direction, and the next useful glance without sending you through dense health charts.
Reset quickly
If your day starts drifting, Sereno uses subtle wrist prompts and short reset flows to help you respond without breaking stride.
Built for your wrist
One glance, real context
Sereno keeps the watch view minimal: your current reading, whether things are settling or climbing, and enough context to decide if this moment needs attention.
Reset without looking down
When you need to steady yourself, Sereno can guide short breathing or grounding resets from your wrist. The cues stay discreet so they fit meetings, commuting, and transitions between tasks.
Relevant views throughout the day
Morning, meeting, workout, wind-down: the watch experience shifts with the context around the signal, so the app stays legible when your attention is limited.
Quick glance from any watch face
Use the complication for a lightweight read on your day. It keeps the signal nearby without forcing you into the full app every time you want orientation.
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Steady
See how you bounce back
Recovery matters as much as the spike. Sereno helps you notice how quickly your system settles again, and whether patterns are improving week to week.
What Sereno adds to your Apple Watch
Apple Watch captures the signal. Sereno explains the pattern around it in plain language.
| Apple Watch alone | Apple Watch + Sereno | |
|---|---|---|
| Heart rate data | Raw numbers in Health app | ✓Real-time stress reading with daily context |
| HRV interpretation | None (just the raw numbers) | ✓Personal baseline comparison with pattern shifts |
| Stress awareness | No stress-specific features | ✓Wrist prompts when the signal starts climbing |
| Breathing exercises | Basic Breathe app (fixed pace) | ✓Short reset flows with haptic pacing |
| Insights | None | ✓Weekly readings that explain what changed |
| Context awareness | None | ✓Meeting, exercise, sleep, and circadian context |
What you need
Apple Watch Series 4 or later (watchOS 10.0+)
iPhone with iOS 17.6+
Free to download (Premium optional at $6.99/mo or $39.99/yr)
Learn more
How the score works
See how Sereno translates Apple Watch and Apple Health signals into a readable stress score.
→Plans & Pricing
Compare Free and Premium features.
→Apple Watch FAQ
Check setup, Apple Health access, and premium plan details.
→Sereno currently supports Apple Watch only. The rest of the site now reflects that narrower, clearer product story.