Guided breathing
An organic visual cue makes every inhale, hold, and exhale clear without turning the session into a dashboard.
Four versioned breathing rhythms
Product
A breathing practice designed around the session.
StillPulse combines clear visual guidance, responsive sound, optional heart-rate input, and a local-first history.
The experience
Guidance when it helps. Quiet when it does not.
Responsive sound
Procedural soundscapes follow the breathing phase, add slow modulation, offer broadband Noise colors, or create non-tonal Nature environments.
4 Classic · 6 Evolving · 4 Noise · 3 Nature
Optional biofeedback
Premium can use live heart rate from the StillPulse Wear OS companion or read-only samples available through Health Connect to gently shape supported sessions.
Wear OS direct · Health Connect alternative · optional
Practice over time
Session history, programs, reminders, Wind-down, analytics, and exports help you see the practice without health claims.
7, 30, and 90 day views
Sound catalog
Seventeen soundscapes. Four distinct families.
Classic presets stay stable, Evolving adds slow modulation, Noise offers broadband color choices, and Nature creates non-tonal environments entirely on-device.
Classic
Stable foundations that respond to the breathing phase without long-form modulation.
Still
FreeA balanced soundscape for everyday breathing practice.
Deep Ground
PremiumA low, darker sound with a calm and stable character.
Warm Drift
PremiumA warm, soft atmosphere for evening unwinding.
Clear Air
PremiumA lighter, more spacious sound designed for calm focus.
Evolving
Slowly changing soundscapes designed to develop gently across the session.
Tidal Breath
FreeOcean-like movement that follows each inhale and exhale.
Slow Orbit
PremiumA spacious soundscape that slowly moves around you.
Living Drone
PremiumA low, organic drone shaped by several interwoven cycles.
Night Tide
PremiumA darker soundscape that gradually settles during the session.
Bio Mirror
PremiumSound shaped by an available pulse, or guided by breath as a fallback.
Fractal Drift
PremiumLayered slow cycles create movement without an obvious repeat.
Noise
White, pink, brown, and gently moving broadband noise generated on-device.
White Noise
FreeA steady broadband noise that softens distracting background sounds.
Pink Noise
PremiumA balanced, softer spectrum for rest, focus, or a quieter-feeling environment.
Brown Noise
PremiumA deep, low-weighted noise with a warm and grounded character.
Gentle Noise
PremiumSoft broadband noise with very slow movement that subtly follows the breath.
Nature
Rain, wind, and distant waves generated procedurally without recordings.
Soft Rain
PremiumGentle rainfall with softly scattered procedural drops.
Gentle Wind
PremiumA soft current of air with long, gradual changes.
Distant Shore
PremiumLayered distant waves with a gentle procedural wash.
Bio Mirror uses fresh heart-rate input only when it is available and permitted. Otherwise, its movement follows the breath.
Choose your level
Start locally. Add more when it is useful.
Free keeps the daily ritual simple. Premium expands the practice with more choice, continuity, and optional biofeedback.
Free
Daily practiceA simple local-first entry point.
- One daily 4-4-4-4 Box Breathing session
- Five minutes with one optional five-minute extension
- Still, Tidal Breath, and White Noise available in Free
- Local session storage on the device
- No account required
- No watch, heart-rate source, or cloud upload required
Premium
Expanded practiceMore flexibility, insight, and optional connectivity.
- Unlimited sessions from 5 to 30 minutes
- Full catalog of four breathing rhythms and seventeen soundscapes
- Sign-in by magic link, password, or Google
- Direct heart-rate input from a compatible Wear OS 3+ watch
- Read-only Health Connect as an alternative source
- Per-session breathing and signal detail
- 7, 30, and 90 day practice analytics
- Programs, Wind-down, reminders, and local exports
- Eligible account-based session sync
Local-first data handling
Free can stay entirely on the device.
Premium cloud features require sign-in. Wear OS and Health Connect are optional heart-rate sources; Health Connect remains read-only. Account and cloud data can be deleted through clearly documented steps.