# iCapNYS — 眼振頭位キャプチャーアプリ

> 眼振頭位キャプチャーアプリ (iPhone/iPad app by Kuroda ENT Clinic.)

- Source: https://appshunter.io/ios/app/icapnys/id1534460257 (this page in markdown: same URL + `.md`)
- Developer: [Kuroda ENT Clinic](https://appshunter.io/developer/1369699677)
- Category: Medical
- Price: Free
- Age rating: 12+
- Requires: iOS 14.0 · 17 MB
- Languages: English, Japanese
- Released: 2020-11-23
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/icapnys/id1534460257/reviews.md

## What is iCapNYS?

This is an app that uses the iPhone’s built-in motion sensors to overlay head position animations onto videos of nystagmus.
By using the front-facing camera, users can record their own nystagmus. In this mode, the screen itself serves as a light source.
When using the rear-facing camera, the iPhone can be fixed in front of the eye with a stabilization device, allowing for shake-free recording of eye movements. 
Settings such as exposure, zoom, and LED brightness can be retained.
Videos are displayed in a list sorted by the exact date and time of recording (year, month, day, hour, minute, second). Tapping a video plays it, and swiping left deletes it. The videos are saved in an album named “iCapNYS.”
The app can also transmit iPhone gyroscope data via Wi-Fi. This feature is designed for the Windows software “CapNYS,” which records nystagmus and head position; CapNYS receives and utilizes the data.

Additionally, the app monitors the iPhone’s motion (pitch, roll, yaw), and if any axis exceeds a preset threshold, it triggers a beep and vibration. This function is used during vestibular rehabilitation.


## Version history (last 5 releases)

### 5.7 — 2025-06-21

Revised the user guide page.
Fixed an issue on the Gyro page where the port number was not being displayed.

### 5.6 — 2025-06-15

Edits to the app instruction page. 
The focus distance setting has been changed to manual adjustment for both the front and back cameras.
Additionally, the focus distance and zoom value are now saved separately for the front and back cameras.

### 5.5 — 2025-06-09

Removed the feature for using Wi-Fi cameras.
Removed the feature for using motion data from the Apple Watch.
Edits to the app instruction page.

### 5.4 — 2025-05-22

Fixed a bug where the app would crash when attempting to start a new recording immediately after stopping the previous one.
Updated the layout of the top page.
Added a feature to record only the bottom-right quarter of the screen when using the back camera.
Added functionality to transmit motion sensor data from Apple Watch to a Windows PC via Wi-Fi.

### 5.3 — 2025-01-22

The telephoto camera on the rear has been disabled, and the wide-angle camera and ultra-wide camera are now selectable. The recording start button has been made semi-transparent to make focus adjustment easier. The recording area has been adjusted to make it easier to capture the eyeballs at the center of the video: for the front camera, the right quarter from the center is captured, and for the back camera, the bottom-right quarter is captured.

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## More apps by Kuroda ENT Clinic

- [vHIT96da](https://appshunter.io/ios/app/vhit96da/id1369699678)
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- [SVV](https://appshunter.io/ios/app/svv/id1471979816)

All apps by Kuroda ENT Clinic: https://appshunter.io/developer/1369699677

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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 2026-05-15.*