# CALM. App — App for CALM. Wearable Sensor

> Wearable ECG sensor app for real-time exercise and sleep monitoring. (iPhone/iPad app by EMC Healthcare K.K..)

- Source: https://appshunter.io/ios/app/calm-app/id1256278738 (this page in markdown: same URL + `.md`)
- Developer: [EMC Healthcare K.K.](https://appshunter.io/developer/1256278737)
- Category: Health & Fitness
- Price: Free
- Rating: 2.33/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 10.0 · 44 MB
- Languages: English, Japanese
- Released: 2017-08-19
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/calm-app/id1256278738/reviews.md

## What is CALM. App?

Connect with your CALM. Wearable ECG Sensor to monitor your exercise in real time

Functions:

Monitor and record your exercise session
>Real time ECG and heart rate
>CALMness score
>Motion intensity

Monitor and analyze your sleep
 >Sleep stages
 >Sleep times and efficiencies
 >Heart rate variability
 >Breathing while asleep

Sync your data with the cloud
 >View your data online at http://sports.calm-health.com

Integrate with with HealthKit
>Sync your resting Heart Rate, and Exercise Heart Rate with HealthKit
>Read your height and weight information from HealthKit to complete your profile

## Key features

- Real-time ECG and heart rate monitoring
- CALMness score tracking
- Motion intensity analysis
- Sleep stage and time monitoring
- Heart rate variability analysis
- Cloud data synchronization
- HealthKit integration

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/calm-app/id1256278738/reviews.md

### 1/5 — Not ready for prime time

*2018-04-10, version 1.9.2*

Endless error loop on attempting to create an account, sign in or reset a password. Syncs with phone, then doesn’t provide an ECG. Useless so far.

## Frequently asked questions about CALM. App

### What can CALM. App monitor during exercise?

CALM. App monitors your real-time ECG and heart rate, your CALMness score, and your motion intensity during exercise sessions.

### How does CALM. App analyze sleep?

CALM. App analyzes your sleep stages, sleep times and efficiencies, heart rate variability, and breathing patterns while you sleep.

### Can I view my CALM. App data online?

Yes, you can sync your data with the cloud and view it online at http://sports.calm-health.com.

### Does CALM. App integrate with Apple Health?

Yes, CALM. App integrates with HealthKit to sync your resting and exercise heart rates. It can also read your height and weight from HealthKit.

### What devices does CALM. App support?

CALM. App is supported on iPhone, iPad, and iPod.

### What is the age rating for CALM. App?

CALM. App has an age rating of 12+.

### When was CALM. App last updated?

The latest version of CALM. App was last updated on November 4, 2018.

### What is the user rating for CALM. App?

CALM. App has a user rating of 2.3 stars based on 3 ratings.

## Version history (last 5 releases)

### 1.9.6 — 2018-11-04

Maintenance update
Enable forced firmware update
Bluetooth behavior tweaks

### 1.9.5 — 2018-08-27

Maintanance, Bluetooth code Update

### 1.9.4 — 2018-05-08

-Fixed Data view bug
-Optimized bluetooth behaviour for iOS 11.3

### 1.9.3 — 2018-04-30

Minor modification in Bluetooth protocol to improve stability.

### 1.9.2 — 2018-03-31

Fixed a bug where graphs did not show

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## More apps by EMC Healthcare K.K.

- [Wellness Passport Home](https://appshunter.io/ios/app/wellness-passport-home/id1531659294)

All apps by EMC Healthcare K.K.: https://appshunter.io/developer/1256278737

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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 2026-06-10.*