# CYO: HRV & Recovery — Track Sleep, Stress & Strain

> Track Sleep, Stress & Strain (iPhone/iPad app by ADRIAN DANIEL CIOC.)

- Source: https://appshunter.io/ios/app/cyo-hrv-and-recovery/id6756105447 (this page in markdown: same URL + `.md`)
- Developer: [ADRIAN DANIEL CIOC](https://appshunter.io/developer/1818602503)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.6 · 10 MB
- Languages: American English
- Released: 2025-12-07
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/cyo-hrv-and-recovery/id6756105447/reviews.md

## What is CYO?

New Health Insights:

Vitality Age: A new bio-age metric that compares your real age against your health data (HRV, RHR, Sleep, and Activity) to see if your body is "younger" or "older" than you are.

Cycle Tracking: Integrated Cycle Phase tracking (Follicular vs. Luteal) to give you training advice based on your hormonal cycle.

Sickness Detection (Internal Load Alert): The app now detects when your body is under strain (high RHR/Respiratory Rate) despite low activity, warning you of potential illness or overtraining.

Daily Stress Score: A new 0-100 "Stress Load" bar that visualizes your physiological stress based on HRV.

EKG Integration: View your latest Apple Watch EKG classification directly on the dashboard.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| BioCharge One Year Subscription | $19.99 | per year |
| BioCharge One Month Subscription | $3.99 | per month |



## Version history (last 5 releases)

### 2.5 — 2026-01-19

New Health Insights:

Vitality Age: A new bio-age metric that compares your real age against your health data (HRV, RHR, Sleep, and Activity) to see if your body is "younger" or "older" than you are.

Sickness Detection (Internal Load Alert): The app now detects when your body is under strain (high RHR/Respiratory Rate) despite low activity, warning you of potential illness or overtraining.

Daily Stress Score: A new 0-100 "Stress Load" bar that visualizes your physiological stress based on HRV.

EKG Integration: View your latest Apple Watch EKG classification directly on the dashboard.

### 2.0.6 — 2025-12-29

Fixed some bugs.

### 2.0.5 — 2025-12-27

We have completely rebuilt the engine to help you recover faster.

New Breathwork Feature: Low recovery? Launch a guided "Resonance Breathing" session directly from the Dashboard to actively improve your HRV.
iCloud Sync: Your Journal and Trends now sync seamlessly across your iPhone and iPad using secure CloudKit technology.
Smarter Algorithms: We moved from static targets to dynamic 30-day baselines. Your Recovery Score is now personalized to your unique physiology.
Smart Bedtime Alerts: Pro users now receive a "Body Battery Check" notification at 9 PM to help plan sleep.
Performance Improvements: Faster load times for historical charts and trend analysis.

### 2.0.4 — 2025-12-25

Bug Fixes & Improvements:

Subscription Restoration: Fixed an issue where the "Restore Purchases" button would not correctly unlock Pro content.

Data Accuracy: Improved the synchronization between HealthKit sleep stages (Deep, REM) and your daily scores.

Performance: Updated core data calculations to be fully compatible with Swift 6 concurrency for a smoother, crash-free experience.

### 2.0.3 — 2025-12-24

Some improvements to the algorithm

## More apps by ADRIAN DANIEL CIOC

- [Clarity Track: Contact Lenses](https://appshunter.io/ios/app/clarity-track-contact-lenses/id6746808548)
- [Carex](https://appshunter.io/ios/app/carex/id6747433518)
- [SubMeter: Subscription Tracker](https://appshunter.io/ios/app/submeter-subscription-tracker/id6755522982)
- [RedobandirePermis](https://appshunter.io/ios/app/redobandirepermis/id6755528465)
- [Skipper Pro: Examen Barcă ANR](https://appshunter.io/ios/app/skipper-pro-examen-barca-anr/id6755884748)
- [RestoLog: Restoration Tracker](https://appshunter.io/ios/app/restolog-restoration-tracker/id6755965508)

All apps by ADRIAN DANIEL CIOC: https://appshunter.io/developer/1818602503

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*