# Calm Rhythm — Stress & Sleep Tracker

> Stress & Sleep Tracker (iPhone/iPad app by 剑炜 陈.)

- Source: https://appshunter.io/ios/app/calm-rhythm/id6760476752 (this page in markdown: same URL + `.md`)
- Developer: [剑炜 陈](https://appshunter.io/developer/1868267178)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: Arabic, English, French, German, Indonesian, Japanese, Korean, Portuguese, Chinese, Spanish and 2 more
- Released: 2026-03-24
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/calm-rhythm/id6760476752/reviews.md

## What is Calm Rhythm?

Calm Rhythm is a stress and sleep tracker that turns your Apple Health data into clear, actionable insights.
• True stress index – estimated from HRV (heart rate variability) and heart rate, not just mood checkins.
 • Daily dashboard – see today’s stress level, HRV, heart rate, sleep and steps in one calm home view.
 • Trends & scores – weekly and monthly stress, recovery, sleep and activity scores so you notice changes early.
 • Professional insights – simple explanations of HRV, cardiovascular health, sleep and recovery based on your data.
 • Smart reminders – optional notifications for morning sleep recap, afternoon move reminder and evening winddown.
 • Biological age (beta) – an estimate based on sleep, HRV, heart rate and activity patterns.

 Calm Rhythm reads data from Apple Health / HealthKit (HRV, heart rate, sleep, steps) and keeps processing on your device. It is designed for wellness and selfawareness only and does not provide medical diagnosis or treatment. Always consult a doctor for any medical concerns.

Terms of Service – StressLife：https://superficial-restaurant-956.notion.site/Terms-of-Service-StressLife-321f52245d5580b094acc9998f1cbec4?source=copy_link
Privacy Policy – StressLife：https://superficial-restaurant-956.notion.site/Privacy-Policy-StressLife-321f52245d558070b8c7ece4565c8c5c?source=copy_link


## Version history (last 2 releases)

### 2.0 — 2026-04-16

- Added Apple Watch companion app with core metrics (stress, HRV, heart rate, steps, sleep).
- Improved HealthKit data reliability and notification accuracy.
- Refined watch UI (better layout, softer background) and fixed localization and app icon issues.

### 1.0 — 2026-03-25

No release notes.

## More apps by 剑炜 陈

- [LumberFit](https://appshunter.io/ios/app/lumberfit/id6757940921)
- [MicroHabit - Daily Tracker](https://appshunter.io/ios/app/microhabit-daily-tracker/id6757958698)
- [Prism-Sunlight Tracker](https://appshunter.io/ios/app/prism-sunlight-tracker/id6758259341)
- [MathLab Kids](https://appshunter.io/ios/app/mathlab-kids/id6758306333)
- [HomeCare Tracker](https://appshunter.io/ios/app/homecare-tracker/id6758888242)
- [SpeechSee](https://appshunter.io/ios/app/speechsee/id6758912846)

All apps by 剑炜 陈: https://appshunter.io/developer/1868267178

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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 2026-05-16.*