# Aperture Protocol

> Aperture Protocol is a 28-day guided breathwork and biofeedback practice for iPhone — paced "coherence" breathing, optional real-time heart-rate biofeedback, and focused visualization, structured as a short daily session with local progress tracking. It works fully offline, requires no account, and by design nothing ever leaves your phone. The app is listed as "Coming soon to the App Store."

apertureprotocol.us is the marketing and support site for the app. Aperture Protocol frames itself as a "Personal Throat Recalibration Protocol": a contemplative wellness practice that helps you "tune out the noise and tighten your filter" — feel steadier, quieter, and harder to rattle. Each daily session (roughly 18–22 minutes) walks through 4-4-6 paced breathing with haptic pulses and voice guidance, a focusing visualization synced to your heartbeat, and a short "refusal drill." Additional features include Instant Detune (a one-tap 60-second guided reset), a 28-day progress grid with streak counter and "habitat index," a Sacred Space environmental checklist, and built-in or user-written reframe scripts.

Biofeedback has three clearly labeled sources: live heart rate from a paired Apple Watch (via Apple Health), an optional finger-pulse reading from the iPhone's rear camera, or a simulated signal when no sensor is available. The site is explicit and repeated on this point: the practice is built on a speculative framework and is **not** science, medicine, or a substitute for professional care. Privacy is a core commitment — no accounts, no servers, no analytics, no ads, no cloud sync; the App Store privacy label is "Data Not Collected."

## Pages

- [Home](https://apertureprotocol.us/) — what the app is, features, the 28-day arc (Week 1 Foundation, Week 2 Entrainment, Week 3 Restoration, Week 4 Resonance lock), the η (eta) filter concept, and privacy commitments
- [Support](https://apertureprotocol.us/support.html) — help center and FAQ; contact email support@apertureprotocol.us
- [Privacy Policy](https://apertureprotocol.us/privacy.html) — effective June 16, 2026; "no accounts and no servers … Data Not Collected"
- [Terms & Disclaimer](https://apertureprotocol.us/terms.html) — full wellness disclaimer and terms of use

## Key facts

- Platform: iPhone; works fully offline; no account required. Status: coming soon to the App Store (not yet available).
- Core practice: 28 days, one short daily session (~18–22 minutes); after the program, maintenance at about three sessions a week.
- Techniques: 4-4-6 paced coherence breathwork with haptics and voice guidance; heart-synced focusing visualization; refusal drills; Instant Detune 60-second reset; Sacred Space checklist; reframe scripts.
- Biofeedback sources: Apple Watch heart rate via Apple Health, iPhone rear-camera finger pulse (user-initiated, brightness-only analysis, nothing recorded), or a clearly labeled simulated signal.
- Conceptual model: the "filter" is modeled by a single variable η (eta); the site's illustrative figures are ~1.3× filter strength at a 10% η reduction, ~3.5× at 50%, ~9.5× at 90%.
- Privacy: no accounts, no cloud, no analytics, no ads, no tracking, no export/sharing; heart data processed live and never stored or uploaded (only derived coherence scores saved locally); deleting the app removes all data. App Store privacy label: "Data Not Collected."
- Important disclaimer (site's own words): a contemplative wellness practice built on a speculative framework — not science or medicine, not medical or psychological advice, and not a substitute for professional care.
- Support contact: support@apertureprotocol.us (independent project; replies typically within a few business days).