# iwhook — Recovery, Sleep & HRV Insights

> Recovery, Sleep & HRV Insights (iPhone/iPad app by 冲 陈.)

- Source: https://appshunter.io/ios/app/iwhook/id6809096797 (this page in markdown: same URL + `.md`)
- Developer: [冲 陈](https://appshunter.io/developer/6808442110)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 8 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-09-15
- Data updated: 2026-10-19

## What is iwhook?

Apple Watch records plenty of data. What matters is understanding what those changes mean compared with your own day-to-day baseline.

With the Apple Health read access you choose, iwhook processes available records locally on your devices and organizes them into explainable recovery, sleep, training-load, and long-term trend views. It compares you with your own history, not a public leaderboard, and never treats missing data as zero.

What you can explore:

• Today: review a recovery reference, sleep performance, and training load, with a practical daily reference based on the records currently available.
• Metric explanations: open the information controls to see definitions, calculation logic, personal baselines, and limitations.
• History: explore daily records and up to 90 recent calendar days of recovery, sleep, HRV, resting heart rate, and training trends.
• Monthly review: compare changes with the previous month, notable high and low days, days with and without recorded training, training density, and data coverage. These are descriptive comparisons, not proof of causation.
• Training records: organize workout types, duration, and available activity facts recorded in Apple Health.
• Apple Watch HRV: compare two aligned 24-hour periods across the latest 48 hours. The solid line shows the latest 24 hours; the dashed line shows 24–48 hours ago. A watch-face complication is included.
• Local Markdown export: manually export all readable history supported by the app or the latest seven local calendar days, together with current cached analysis and metric guides.

Privacy by design:

• No registration or sign-in.
• No ads, analytics SDKs, or tracking.
• Core analysis and cached results are processed locally on your devices.
• Apple Health data is not uploaded to a developer-operated server or automatically stored in iCloud by the app.
• The app requests read access only and does not write to Apple Health.

Data availability depends on device capabilities, wear time, Apple Health records, and your permission choices. Missing data is shown as unavailable. iwhook is not a medical device and does not provide diagnosis, treatment, medication, or emergency medical guidance.

## Is iwhook safe?

Not enough ratings yet to assess iwhook.

## Is iwhook legit?

iwhook has limited verification signals. The AppsHunter Legitimacy Score for iwhook is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.10 — 2026-10-07

• A simpler Today screen with three tappable core cards: Sleep, Activity and Recovery.
• New detail pages with input records, available personal baselines and data sources.
• Seven-day training-minutes and recovery charts, with expandable daily values.
• Less explanatory text; definitions and limitations are available through information buttons.
• Primary-source selection and same-day comparisons for supported raw metrics where multiple sources exist.
• Sleep analysis now uses a configurable target, 7-night average sleep gap and 14-night adequacy, with clear coverage and limitations.
• Improved English and Simplified Chinese copy and missing-data states.

### 1.9 — 2026-10-04

• Expanded Apple Watch complications with 48-hour HRV comparison, Daily Summary, Recovery, and Sleep views.
• Added sample timing and freshness states to the HRV complication.
• Improved missing-data, insufficient-sample, privacy, and accessibility states.

### 1.8 — 2026-10-03

• Adds English support across the main iPhone app's core paths, Apple Watch app, and HRV watch complication.
• Adds English (U.S.) and English (U.K.) App Store information while retaining Simplified Chinese.
• Keeps the 48-hour HRV comparison, richer monthly insights, metric explanations, and local Markdown export.

### 1.7 — 2026-09-27

• 完善中国大陆地区的备案与产品信息。
• 新增 Apple Watch HRV 48 小时趋势小组件：实线展示最近 24 小时，虚线对比 24–48 小时前。
• 丰富月报信息，增加环比、月内走势、训练与休息日对照及数据完整度。
• 完善指标解释、本地 Markdown 导出和数据显示稳定性。

### 1.6 — 2026-09-16

新增 Apple Watch HRV 小组件与表盘复杂功能，可查看最近 48 小时 HRV：实线展示最近 24 小时趋势，虚线对比此前 24 小时。优化指标说明、数据刷新与显示稳定性。

## More apps by 冲 陈

- [LongScreen - 长截图](https://appshunter.io/ios/app/longscreen/id6811240569)
- [i听文档](https://appshunter.io/ios/app/i/id6818733564)
- [餐食记](https://appshunter.io/ios/app/id6818942876)
- [CC 便签](https://appshunter.io/ios/app/cc/id6819976813)

All apps by 冲 陈: https://appshunter.io/developer/6808442110

---

*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 2026-10-19.*