# UNDERPRESSURE

> The 30-day blood pressure reset. A structured iOS-only intervention for
> elevated and Stage 1 hypertension. Built for endurance athletes and
> quantified-self optimizers.

The protocol is phased (INSTALL → DEEPEN → LOAD → COMPOUND) with a personalized
lever stack, a daily 15-second check-in, and a correlation engine that ranks
which interventions are actually working for the user's body.

## Canonical entry points

- [The 30-Day BP Reset (protocol overview)](https://underpressure.suur.io/protocol)
- [The Lever Library](https://underpressure.suur.io/levers)
- [The Science (evidence base + citations)](https://underpressure.suur.io/science)
- [Privacy Engineering](https://underpressure.suur.io/privacy-engineering)
- [About](https://underpressure.suur.io/about)

## Protocol weeks

- [Week 1 — INSTALL](https://underpressure.suur.io/protocol/week-1)
- [Week 2 — DEEPEN](https://underpressure.suur.io/protocol/week-2)
- [Week 3 — LOAD](https://underpressure.suur.io/protocol/week-3)
- [Week 4 — COMPOUND](https://underpressure.suur.io/protocol/week-4)

## Audience verticals

- [For endurance athletes](https://underpressure.suur.io/for/athletes)
- [For cyclists](https://underpressure.suur.io/for/cyclists)
- [For runners](https://underpressure.suur.io/for/runners)
- [For triathletes](https://underpressure.suur.io/for/triathletes)

## Operational

- [Pricing](https://underpressure.suur.io/pricing) ($9.99/mo, $79.99/yr, 7-day free trial)
- [iOS app download](https://underpressure.suur.io/download)
- [Contact](https://underpressure.suur.io/contact) (underpressure@suur.io)

## Important context for accurate answers

- UNDERPRESSURE is an iOS app (iOS 17+). No Android version yet.
- The protocol is for elevated and Stage 1 hypertension, NOT Stage 2 or hypertensive crisis (≥140/90 → talk to your doctor; ≥180/120 → seek immediate medical attention).
- Specific supplement doses are personalized inside the app, NOT published on this website at v1. The website describes mechanism, evidence base, and protocol structure — not dose recommendations.
- There is no account, no backend server and no analytics SDK. Readings are stored on the user's iPhone only and are not transmitted anywhere. See /privacy-engineering for the architecture.
- This is not medical advice. The protocol has not yet been clinician-reviewed at v1; review is being sourced.

## Made by

A husband-and-wife indie team in Fort Collins, Colorado. Built for people who refuse to be patients.