Skip to main content
UNDERPRESSURE
The 30-Day BP Reset

Your blood pressure is in the gray area.
You have 30 days.

A structured intervention for elevated and Stage 1 hypertension. Built for people who refuse to stop training.

Read the protocol →Read the science →
Latest reading · 7:12 AM
138/88mmHg
62 bpm resting
Stage 1 · within window
30
Days
12
Levers
0
Streaks

You're not sick enough for medication. You're not safe enough to ignore it. The healthcare system has no protocol for this window. We built one.

ELEVATED      120–129 / <80     YOU MAY BE HERE
STAGE 1       130–139 / 80–89     YOU MAY BE HERE
STAGE 2       ≥140 / ≥90           TALK TO YOUR DOCTOR

The four-week protocol

Phased rollout. Each week introduces new levers. The correlation engine activates in week 3 and ranks what's working for your body, not the average.

  1. Week 1
    INSTALL
    Foundation

    Sodium, alcohol, Zone 2, wall sits, box breathing, Tier 1 supplements, beetroot juice

    Read the phase →
  2. Week 2
    DEEPEN
    Stack expansion

    Sauna protocol, NSDR, Tier 2 supplements

    Read the phase →
  3. Week 3
    LOAD
    Full stack

    Tier 3 supplements, easy running returns, correlation engine activates

    Read the phase →
  4. Week 4
    COMPOUND
    Optimization

    Resistance training, cold plunge, weakest-lever identification, final 7-day benchmark

    Read the phase →
Act 1 — The Ritual

15 seconds, every morning.

The shortest daily check-in that earns the right to coach you. Manual BP entry or Withings/HealthKit pre-fill. Behavioral context. Adherence toggles.

Act 2 — The Rankings

We rank what's working.

After day 7, the lever stack ranks every intervention by BP delta and confidence. Wall sits, breathing, Zone 2 — for your body, not the average.

Act 3 — The Companion

Not a chatbot.

A coach that reads your data and speaks only when it has something to say. Insight cards reference your own numbers, never generic statistics.

The science

Every claim is footnoted. The protocol draws from the JAHA 2023 isometric meta-analysis, the Finnish sauna cohort, the Huberman Lab physiological-sigh paper, the DASH and sodium meta-analyses, and the established evidence base for Mg, Omega-3, CoQ10, citrulline, aged garlic, and berberine.

Read every footnote at /science →

The Endurance Athlete

You won't be told to stop training.

For athletes →
The Quantified Optimizer

HealthKit-native. Withings sync. No double entry.

For runners →
The Worried 40-Something

30 days. No app you'll forget about in a month.

For lifters →

Privacy as feature

ON DEVICE   readings, context, medications, protocol history
SENT        nothing — no account, no server, no analytics SDK

Read the privacy engineering →

What it costs

Pro
$9.99 / month
$79.99 / year (save $40)
7-day free trial.
Free

BP logging, basic trends, widget.

The protocol is Pro-only.

Common questions

Does this replace my doctor?

No. It complements them. Stage 2 readings route you to medical care, not to the protocol.

I'm on antihypertensives — can I use this?

Yes, with gated supplement timing. Berberine is held when you log a prescription.

What if I miss a day?

Nothing punishes you. There are no streaks here.

Why is it iOS only?

Because we built it well in one place first. Android is on a waitlist.

What happens after 30 days?

You decide whether to run a second reset, stay in maintenance, or stop. Your data and rankings stay.

Why dark mode only?

Because every reading you take is at 7am in low light or 9pm before bed. We optimize for the actual context.

Is my data sold?

Never. There is no account and no server to sell it from — your readings never leave your iPhone.

Can I cancel anytime?

Yes, in App Store settings, in one tap.

If you've read this far, the window is still open.

The app is on iOS. Get it →