HeartOS

A proactive cardiovascular wellness routine in one private offline app. Seven tabs. One file. Yours forever for one price. Built around the longevity-first approach popularized by Peter Attia in Outlive - routine over intensity, decades over weeks, the metabolic engine over the symptom. A Zone 2 cardio tracker with a personalized heart-rate window auto-calculated from your age (220 minus age, multiplied by 0.6 to 0.7), the easy aerobic zone where mitochondria adapt and cardiac output improves without crushing recovery. A weekly Zone 2 minutes target of 150+ with a live progress bar so you can see where the week stands on Wednesday and adjust. A stacked weekly zone-breakdown bar covering Z1 to Z5 so you stop accidentally training Zone 4 every session and call it cardio. A workout history with zone chips and durations. A heart-healthy plate logger with daily targets for omega-3 servings (2+ per day from salmon, sardines, walnuts, chia, flax), fiber (30g+), leafy greens (3+ cups), and olive oil servings - the Mediterranean pattern shown in PREDIMED to cut cardiovascular events. 12 Mediterranean recipe cards. A stress reset module with 5 streak cards (box breathing, sauna, cold exposure, nature walk, meditation) so daily nervous-system practice becomes a routine, not a "when I feel like it." A daily HRV proxy on a 1 to 5 scale with a trend line. A sleep tracker with an auto-detected correlation insight that surfaces patterns like "Your Zone 2 days have +0.8 sleep quality" or "Your sauna days have +0.6 HRV next morning." A lab markers panel for quarterly entries with target chips - ApoB <80 optimal, LDL <100, HDL >60, hsCRP <1.0, HbA1c <5.6 - and an ApoB trend chart so you can see whether your routine is moving the number that matters most. Settings for profile, age (drives the Zone 2 HR window), JSON export and import, and full reset. Every input saves locally to your device. Nothing goes to a server. No account, no subscription, no app store, no annual fee, no health data sold to advertisers. Works on laptop in any browser, and adds to your iPhone or Android home screen as a standalone app for offline use.

WHAT'S INCLUDED

• 7 tabs: Today, Cardio Zones, Plate, Stress Reset, Sleep, Lab Markers, Settings
• Zone 2 minutes per week with personalized HR window (auto from age)
• Weekly Zone 2 progress bar toward 150+ minute target
• Stacked weekly zone-breakdown bar Z1-Z5
• Workout history with zone chips and durations
• Heart-healthy plate: omega-3 + fiber + olive oil + leafy greens daily targets
• 12 Mediterranean recipe cards
• 5 stress practices streak cards (box breathing, sauna, cold, nature, meditation)
• Daily HRV proxy 1-5 with trend line
• Auto-detected sleep correlation insight (Zone 2 days vs sleep quality)
• Lab panel table with target chips: ApoB, LDL, HDL, hsCRP, HbA1c
• ApoB trend chart over quarterly entries
• Age-driven Zone 2 HR auto-calc (220-age x 0.6 to 0.7)
• JSON export / import / full reset
• 14 days demo data preloaded
• Single private HTML file - laptop + iPhone + Android home screen, fully offline

100% PRIVATE AND OFFLINE

Your cardio sessions, plate logs, HRV, sleep, and lab markers never leave your device. No account, no cloud, no analytics, no tracking. All your Zone 2 minutes, omega-3 plates, stress practices, HRV scores, and ApoB / LDL / HDL entries live only on this device. Works completely offline.

WORKS ON ALL DEVICES

Open on laptop, add to home screen on iPhone (Safari) or Android (Chrome) as an app. One file, all devices.

INSTANT DOWNLOAD

Download once, use forever. No subscription, no renewal, no expiry.

PERFECT FOR

• Health-conscious adults 35-65 building a long-horizon cardio routine
• Post-cardiac event patients in maintenance phase managing risk factors
• People with family history of cardiovascular disease wanting prevention
• Longevity readers (Peter Attia Outlive, David Sinclair) tracking ApoB and Zone 2
• Women in perimenopause when cardiovascular risk rises sharply
• Men 40+ planning long healthspan with proactive metabolic markers

Questions? Message us on Etsy - we reply within 24 hours.

Disclaimer: Not medical advice. Consult your cardiologist or physician about cardiovascular risk and exercise programs. This is a personal lifestyle planning tool.