# CardialOS: Heart & Recovery

> Honest cardio recovery & load

Canonical page: [https://chrome-stats.com/d/id6778513012](https://chrome-stats.com/d/id6778513012)

## Overview

- **ID:** `id6778513012`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** TheTinyApp
- **Category:** Health & Fitness
- **Version:** 0.1.3
- **Last updated:** 2026-07-06
- **First published:** 2026-06-17
- **Size:** 51 MB
- **Data as of:** 2026-09-04
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/cardialos-heart-recovery/id6778513012)
- **Privacy policy:** [https://thetinyapp.github.io/public/carve/privacy.html](https://thetinyapp.github.io/public/carve/privacy.html)

## Description

CardialOS reads the biometrics your Apple Watch already records — heart-rate variability, resting heart rate, VO₂max, sleep, and your workouts — and turns them into a clear, honest picture of your cardiovascular recovery, training load, and fitness.

No hype, no vanity scores. Just a straight read on how your heart and body are adapting, so you can train with intent and recover on purpose.

WHAT CardialOS SHOWS YOU
  • Recovery — a daily read built from HRV, resting heart rate, and sleep.
  • Training load — acute vs. chronic load and your acute:chronic ratio, so you build fitness without digging a
  hole.
  • Strain & stress — how hard a day asked of you, and how your body is carrying it.
  • Cardio fitness — VO₂max trends, a heart-rate-to-VO₂ view, and a race-time predictor.
  • Heart-rate zones & training distribution — where your time actually goes across easy, threshold, and hard.
  • Workouts — per-session detail with heart-rate drift (decoupling) and efficiency.
  • Vitals — HRV, resting heart rate, respiratory rate, blood oxygen, wrist temperature, and sleep, with trends.
  • Cardiovascular age — how your fitness compares to your years.

HONEST, SUPPORTIVE GUIDANCE
CardialOS's voice is plain and kind. On a hard day it tells you to hold steady and protect your sleep — not that you're crushing it. The goal is a read you can trust over months, not a dopamine hit.

YOUR DATA STAYS ON YOUR DEVICE
CardialOS reads from Apple Health and does its calculations on your device. Your health data is never sent to a server — there's no account and no sign-in. (Anonymous usage and crash diagnostics help us fix bugs — never your health values. See our Privacy Policy.)

BEST WITH AN APPLE WATCH
CardialOS works with the heart-rate, HRV, sleep, VO₂max, and workout data your Apple Watch writes to Apple Health. The more your Watch records, the richer your picture.

CardialOS is a personal fitness and wellness tool. It is not a medical device and does not diagnose, treat, cure, or prevent any condition. Always consult a qualified professional about your health.

## Rankings

- #1,663,105 — Overall

## Similar extensions and apps

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- [Boddy: Stress & Sleep Monitor](https://chrome-stats.com/d/id6759625037) — 4.00 / 5
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- [Reverie: Sleep Strain HRV](https://chrome-stats.com/d/id6748383629)
- [Observa: HRV & Recovery Score](https://chrome-stats.com/d/id6757438990) — 3.00 / 5
- [BioPulse: AI Heart Rate Coach](https://chrome-stats.com/d/id6762162400)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6778513012)