# NK 12-Lead ECG Wheel — 12-Lead ECG Interpretation

> 12-Lead ECG Interpretation (iPhone/iPad app by Nihon Kohden America, Inc..)

- Source: https://appshunter.io/ios/app/nk-12-lead-ecg-wheel/id1146663860 (this page in markdown: same URL + `.md`)
- Developer: [Nihon Kohden America, Inc.](https://appshunter.io/developer/1146663859)
- Category: Medical, Education
- Price: Free (on sale, was $4.99)
- Age rating: 12+
- Requires: iOS 11.0 · 362 MB
- Languages: American English
- Released: 2016-09-20
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/nk-12-lead-ecg-wheel/id1146663860/reviews.md

## What is NK 12?

Nihon Kohden’s ECG Wheel is an educational medical app designed to provide a quick easy to use reference for 12-lead electrocardiogram interpretation in the form of an interactive rotating wheel.
Features include ECG Wheel, Normal versus abnormal QRS Morphology, Sequence for 12-Lead ECG Interpretation, Learn More buttons, and interactive 3D heart images


## Version history (last 3 releases)

### 1.2 — 2019-05-15

The ECG Wheel App has a new look and some new features! 
Here are a few of the enhancements you’ll find in the latest update:
- Improved wheel functionality
- New Feature: “Learn More” section featuring ECG waveforms, a 3D interactive heart, and quick tips for each myocardial infarction
- New Feature: Normal QRS morphology (in seconds and milliseconds)
- New Feature: Sequence for 12-Lead ECG Interpretation

### 1.1 — 2016-11-01

Slight artwork modifications.

### 1.0 — 2016-08-31

No release notes.

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [EMS Drip Calc](https://appshunter.io/ios/app/ems-drip-calc/id6446053905) | 2.7 (3) | $1.99 | Medical |
| [12 Lead ECG Challenge](https://appshunter.io/ios/app/12-lead-ecg-challenge/id461149429) | 3.3 (4) | $5.99 | Medical |
| [Washington Manual Cardiology](https://appshunter.io/ios/app/washington-manual-cardiology/id1236246678) | 4.0 (4) | Free | Medical |
| [Cardiospy Mobile ECG](https://appshunter.io/ios/app/cardiospy-mobile-ecg/id958924216) | — | Free | Medical |
| [Clinical ECG Interpretation](https://appshunter.io/ios/app/clinical-ecg-interpretation/id6608988850) | — | $1.99 | Medical |

## More apps by Nihon Kohden America, Inc.

- [NK Alarms](https://appshunter.io/ios/app/nk-alarms/id1448919427)
- [NK Dimensions AR](https://appshunter.io/ios/app/nk-dimensions-ar/id1463051986)

All apps by Nihon Kohden America, Inc.: https://appshunter.io/developer/1146663859

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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 2026-05-17.*