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For Apple Watch

Sleep & HRV recovery score

RecoverySync

RecoverySync analyzes your HRV, resting heart rate, and sleep to deliver a single daily recovery score — right on your wrist.

Download on the App Store Learn more

One score. Three signals.

Your recovery score is calculated from the health data your Apple Watch records while you sleep.

76–100
HIGH
51–75
MODERATE
0–50
LOW
Heart Rate Variability 50%
Resting Heart Rate 30%
Sleep Duration 20%

Built different.

No subscriptions. No account. No data leaving your device.

🔒

Privacy First

Zero data collection. Your health data stays on your device. No servers, no tracking, no ads.

⌚

Apple Watch Native

Reads directly from HealthKit. Works with Apple Watch Series 4 and later, including complications and widgets.

🌅

Morning Score

Get your personalized recovery score every morning. Optional notification delivers it before you start your day.

📈

Personal Baseline

After a short calibration period, scores are benchmarked against your own 28-day moving average — not population averages.

💳

One-Time Purchase

No subscription, no recurring charges. Pay once, use forever.

📊

Trend Analysis

Track your recovery trends over time with built-in charts. With Full Access, export your history as CSV.

How it works

1

Wear Apple Watch to sleep

Sleep tracking and HRV recording happen automatically.

2

Open the app in the morning

Your recovery score is ready when you wake up.

3

Read your score

HIGH, MODERATE, or LOW — with a breakdown of each metric.

4

Train accordingly

Let your body guide your training intensity for the day.

Your data stays on your device.

RecoverySync has a "Data Not Collected" privacy label on the App Store — the highest standard. No analytics, no crash tracking, no advertising. Your health data never leaves your iPhone.

Read our Privacy Policy

Start tracking your recovery

Available on the App Store for iPhone and Apple Watch.

$4.99 one-time · ¥780
Download on the App Store

Requires

  • iOS 17.0+
  • watchOS 10.0+
  • Apple Watch Series 4+

ご注意：回復スコアは一般的なウェルネスの参考情報であり、医学的な助言・診断ではありません。体調に不安があるときは医師にご相談ください。

Screens

Score detail. A recovery score of 82 (good), with the HRV, resting heart rate and sleep figures behind it, a workout note field, and the personal-baseline calibration progress
Score detail
Trend. Recovery score plotted over 7 or 28 days, with tabs for score, HRV, resting heart rate and sleep
Trends

About the Android version

An Android version of RecoverySync is in preparation. It supports Android 9.0 and later and will be published on Google Play.

Both implementations are checked against the same verification data so that the Android build calculates and judges exactly as the iOS one does. Storage and backup behaviour is described in the privacy policy.

We are not linking to a store page until it is live. We will announce it here and on the support page.

RecoverySync

Available on the App Store, for iPhone and iPad.

View on the App StoreFree with in-app purchase