# Pocket Heart Sound

> Interactive cardiac sound and visualizer with historical context. (iPhone/iPad app by Tatsuya Kawasaki.)

- Source: https://appshunter.io/ios/app/pocket-heart-sound/id1422976910 (this page in markdown: same URL + `.md`)
- Developer: [Tatsuya Kawasaki](https://appshunter.io/developer/1422553439)
- Category: Medical, Education
- Price: $0.99
- Rating: 1.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 9.0 · 59 MB
- Languages: English
- Released: 2018-08-10
- Data updated: 2026-07-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pocket-heart-sound/id1422976910/reviews.md

## What is Pocket Heart Sound?

The heart is talkative, murmuring joyfully, anxiously, enthusiastically, calmly, cheerfully, breathlessly, contentedly, or unhappily. It is not always easy to understand the language of the heart, but applying a stethoscope to the chest is undoubtedly exciting.

This app is designed to describe the pleasure of communicating with the heart; 150 phonocardiograms (PCGs) were selected from more than 5,000 recordings: Each PCG is shown with sound, and 50 PCGs have both sound and echocardiography. The history of the stethoscope and trivia for cardiac auscultation are also included.

It would be great if this app motivates people to learn about cardiac auscultation. I am grateful for all of the support I have received during the recording and interpretation of the PCGs at Matsushita Memorial Hospital. I welcome your comments, questions, critiques, feedback, corrections, stories, experiences, and anecdotes.

## Key features

- 150 phonocardiograms (PCGs)
- Audio and echocardiography visuals
- History of the stethoscope
- Cardiac auscultation trivia
- Interactive heart communication


## Frequently asked questions about Pocket Heart Sound

### What is Pocket Heart Sound?

Pocket Heart Sound is a medical app designed to help users understand the language of the heart. It features 150 phonocardiograms with sound and some with echocardiography, along with historical information about stethoscopes and cardiac auscultation.

### How much does Pocket Heart Sound cost?

Pocket Heart Sound is a paid application, priced at $0.99. This one-time purchase grants you access to all its features.

### What devices is Pocket Heart Sound available on?

Pocket Heart Sound is compatible with iPhone, iPad, and iPod touch devices, as well as Apple Watch. It requires iOS 10.0 or later.

### When was Pocket Heart Sound last updated?

The latest version of Pocket Heart Sound, 2.2.1, was released on August 2, 2019. The app was initially released on August 10, 2018.

### What is the age rating for Pocket Heart Sound?

Pocket Heart Sound has an age rating of 17+, indicating it contains content suitable for mature audiences. This is likely due to the medical nature of the subject matter.

### Does Pocket Heart Sound offer free content?

Pocket Heart Sound is a paid app and does not offer free content. The purchase price of $0.99 provides access to all 150 phonocardiograms and accompanying features.

### What is the user feedback on Pocket Heart Sound?

Based on the available data, Pocket Heart Sound has received one rating of 1.0 stars. Further user sentiment details are not provided.

### Can I use Pocket Heart Sound offline?

The description does not specify offline functionality. However, as it is a content-heavy application with audio and visual elements, an internet connection may be required for full functionality.

## Version history (last 1 release)

### 2.2.1 — 2019-08-02

1. Some minor errors fixed.
2. App information revised.

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## More apps by Tatsuya Kawasaki

- [ポケット心音](https://appshunter.io/ios/app/id1422553440)
- [ポケット・フィジカル](https://appshunter.io/ios/app/id1444423735)
- [ポケット心エコー図](https://appshunter.io/ios/app/id1460486462)
- [Pocket Heart Echo](https://appshunter.io/ios/app/pocket-heart-echo/id1461658611)
- [ポケット心電図](https://appshunter.io/ios/app/id1463931670)

All apps by Tatsuya Kawasaki: https://appshunter.io/developer/1422553439

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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 2026-07-07.*