Core Instrument (v1.0)
Free · No account or trial timer
- All 5 evidence-informed clinical breathing protocols
- Full CoreHaptics continuous waveform & 432Hz procedural audio engine
- Focus, Immersive Dark Ritual, and Glanceable commute modes
Eyes-free physiological breathwork for iPhone
The breathing instrument you feel, not watch.
ZenBreath AI is a haptic precision instrument for your autonomic nervous system, not a content-heavy meditation library. Continuous CoreHaptics waveforms guide every inhale, hold, and exhale through your fingertips so you can close your eyes and practice in zero latency.
Inhale · 4s
Continuous swell 0.15 → 0.85
Hold · 7s
1.0 Hz subtle heartbeat pulse
Exhale · 8sVagal Brake
Smooth ramp 0.85 → 0.15 (Parasympathetic)
Biofeedback Gate
Stationary verified · 88/100 Resonance
Tactile waveform architecture. Close your eyes and feel each phase boundary without staring at a bright screen.
Core specifications & physiological architecture
Tactile EngineCoreHaptics Curves
Continuous intensity ramps for inhale/exhale and transient pulses for breath holds
AI Rhythm Tuning0ms Zero-Wait
Instant start with cycle-boundary hot-swap via on-device Apple FoundationModels
Biofeedback IntegrityMotion-Gated
Accelerometer gate withholds distorted HRV resonance scores when physical motion is detected
Privacy StandardZero Tracking
No user accounts, no advertising SDKs, no behavioral trackers, 100% local session storage
One physiological loop. Three steps.
Open the app and begin breathing in 0 milliseconds—no account walls, no audio monologues, and no loading spinners.
Pick a protocol or describe your moment
Choose from 5 evidence-informed clinical protocols (Box 4-4-4-4, 4-7-8 Weil Sleep, Extended Exhale, 0.1 Hz Resonant Flow, Energy Lift) or describe your state in natural language for AI tuning.
Close your eyes and feel the waveform
Double-tap the orb or press Play. Continuous haptic intensity curves, optional 432Hz procedural crystal chimes, and three context modes (Focus, Dark Ritual, Glanceable) pace your breath.
Review motion-verified biofeedback
Sessions over 20 seconds sync Mindful Minutes to Apple Health and compute an honest autonomic Resonance Score—automatically gated by the accelerometer if movement occurred.
How ZenBreath AI compares
Why a dedicated haptic physiological instrument outperforms content-bloated meditation platforms.
| Capability | ZenBreath AI | Generic Meditation Apps |
|---|---|---|
| Sensory Guidance | Continuous CoreHaptics intensity ramps + procedural 432Hz crystal cues for eyes-free practice. | Requires staring at screen animations or listening to 40-minute recorded voice monologues. |
| Launch & AI Latency | 0ms instant session launch; AI rhythm tuning hot-swaps smoothly at the next cycle boundary. | Multi-screen onboarding quizzes, mandatory sign-ins, and network loading spinners. |
| Biofeedback Honesty | Accelerometer motion-gating withholds HRV resonance scores when walking or commuting. | Fabricates flattering 'stress scores' even when sensors are corrupted by physical motion. |
| Timing Precision | Deterministic Date() delta engine against t0—zero cumulative timer drift across long sessions. | Naive interval timers that drift out of phase when backgrounded or throttled. |
| Privacy & Commercials | Zero accounts, zero tracking SDKs, and 100% free full access in v1.0 without trial traps. | Aggressive $69.99/year auto-renewing paywalls, ad attribution SDKs, and behavioral profiling. |
ZenBreath AI is engineered as a general wellness breathwork instrument, not a medical device.
Your autonomic data stays on your iPhone.
Physiological and emotional context is deeply personal. Local execution and strict sensor hygiene are built into the engine.
- No account creation, no sign-in wall, and zero cloud profile storage
- On-device Apple Intelligence FoundationModels inference when supported (zero bytes leave your iPhone)
- Explicit GDPR consent gate before any optional anonymous cloud AI fallback is used
- Accelerometer motion data is evaluated in real time during active sessions and never stored or uploaded
- Optional Apple Health integration writes Mindful Minutes and reads session heart rate locally
- Zero advertising networks, zero analytics SDKs, and zero cross-app tracking (`PrivacyInfo.xcprivacy` verified)
Full instrument access. Zero subscription traps.
Every physiological protocol, haptic mode, and biofeedback report is unlocked out of the box.
AI & Biofeedback Suite
Included in v1.0 · Zero subscriptions
- 0ms AI Instant Customizer (On-Device FoundationModels + GDPR-gated fallback)
- Motion-gated HRV Resonance Score & Apple Health Mindful Minutes sync
- Dynamic Island & Lock Screen Live Activity phase tracking
Frequently Asked Questions
Clear technical answers about tactile waveforms, 0ms AI routing, motion gating, and privacy.
How does eyes-free CoreHaptics breathing guidance work?
ZenBreath AI synthesizes real-time CHHapticPattern curves on your iPhone's Taptic Engine. During inhalation, tactile intensity swells smoothly from 0.15 to 0.85; during breath holds, a subtle 1 Hz pulse mirrors a resting heartbeat; during exhalation, intensity dissolves from 0.85 down to 0.15. You can close your eyes and follow the entire respiratory arc by touch.
How can AI rhythm generation start in 0ms without a loading spinner?
When you describe your state or tap a situational chip in AI Tune, ZenBreath immediately starts your session on cycle 1 using a balanced baseline cadence so you never wait on a spinner. In the background, the AI router computes your tailored inhale/hold/exhale parameters and hot-swaps them seamlessly at the exact boundary of your next breath cycle.
Does ZenBreath AI send my personal state descriptions to the cloud?
On Apple Intelligence compatible devices, AI generation runs 100% on-device via Apple's FoundationModels framework—zero bytes leave your iPhone. On devices without on-device AI, ZenBreath asks for your explicit GDPR consent before routing only the short situation text through our stateless edge proxy (which stores zero logs). If you decline or are offline, it silently falls back to a validated local preset.
Why did my post-session report withhold the Resonance Score due to Motion Gating?
Heart Rate Variability (HRV) and respiratory sinus arrhythmia measurements require physical stillness. Even slight walking or transit vibrations corrupt biometric readings. ZenBreath's MotionGuard monitors the accelerometer during your session and honestly withholds the numeric Resonance Score if movement is detected, rather than showing fabricated data.
What are the 5 clinical breathing protocols included in ZenBreath AI?
1) Quick Calm (4s inhale, 8s extended exhale, based on Balban & Huberman 2023); 2) Sleep Wind-Down (4-7-8 Weil relaxation protocol); 3) Deep Focus (4-4-4-4 Navy SEALs tactical box cadence); 4) Daily Balance (4s inhale, 6s exhale at 0.1 Hz / 6 breaths per minute baroreflex resonance, Lehrer & Gevirtz 2014); and 5) Energy Lift (6s inhale, 2s exhale for midday alertness).
Is ZenBreath AI a medical device, and does it require an account or subscription?
ZenBreath AI is a general wellness breathwork instrument, not a medical device, and does not diagnose, treat, or prevent any medical condition. It requires no user account, contains zero third-party tracking SDKs, and v1.0 provides full access for free with no subscriptions.
What ZenBreath AI does not do.
- Not a medical device—designed strictly for general wellness, relaxation, and autonomic pacing
- Not a content-heavy meditation podcast library with 40-minute spoken lectures or social feeds
- Never fabricates HRV resonance scores when physical movement invalidates sensor accuracy
Close your eyes. Feel your next breath.
Requires iPhone with iOS 17.0 or later. Apple Health and Motion permissions are optional and can be managed at any time in iOS Settings.