# DryEyeRhythm — Track your daily changes

> Smartphone-based dry eye assessment and tracking for personal health and research. (iPhone/iPad app by 順天堂大学.)

- Source: https://appshunter.io/ios/app/dryeyerhythm/id1164781008 (this page in markdown: same URL + `.md`)
- Developer: [順天堂大学](https://appshunter.io/developer/1080910962)
- Category: Medical, Health & Fitness
- Price: Free
- Age rating: 17+
- Requires: iOS 16.0 · 24 MB
- Languages: American English, Japanese
- Released: 2018-04-22
- Data updated: 2026-07-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dryeyerhythm/id1164781008/reviews.md

## What is DryEyeRhythm?

Your headache and stiff shoulders may be caused by dry eye.
"Dry Eye Rhythm" is an application that you can do dry eye check in 5 minutes using the smartphone.
Measurement results can be confirmed with your own eyes, as well as for dry eye research by Juntendo University ophthalmology.


[Purpose of dry eye rhythm]
It is estimated that there are 22 million people in Japan and 1 billion people in the world, the most common eye disease is dry eye. However, many people have not yet diagnosed, causing eye quality, headache, headache, lowering subjective visual acuity, stiff shoulder, etc. which is a cause of lowering quality of life.

If we can gather information as accurate as possible about fluctuations of symptoms from usual time, we should be able to prevent it before symptoms arise and to speed up recovery. In this way, "dry eye rhythm" was created from the desire to deliver eye health to everyone.


[What you can do with dry eye rhythm]
1. Easy dry eye measurement in 5 minutes, you can check your dry eye score.

2. By entering lifestyle such as stress and sleep time, you can check correlation between daily dry eye score and lifestyle on your own.

3. You can check the user's dry eye status on dry eye map.

4. Anonymized big data will be useful for dry eye research by Juntendo University ophthalmology.


[How to use the application]
1. After agreeing to the research, enter basic information.

2. You can measure your own dry eye score with a camera's blink check and questionnaire input. (1 day a day, continuous measurement for 7 days is recommended)

3. Enter your lifestyle such as sleeping time, stress, time you saw the monitor. (1 day a day, continuous measurement for 7 days is recommended)

4 The results of the measurement can be seen on the graph and calendars, and you can check the change in dry eye score and the correlation with your lifestyle with your own eyes.


[About safety]
- Privacy
Because collected data does not have information that leads to the identification of an individual, even if it leaks by chance, it will not lead to personal rights or property damage. Also, withdrawal of consent for research can be withdrawn at any time.

- Data handling
Research results obtained through cooperation and collected data may be published in academic presentations or academic journals in order to be useful for early detection, diagnosis and treatment of each disease. In addition, data collected for this research may be used for another research or development.

- Notices
This application was developed exclusively for collecting data in clinical research and is not intended for other purposes. We can not compensate for any health damage or equipment damage due to research participation. Because the measurement result by this application is not a doctor's diagnosis, if you have a symptom to worry please get a doctor's diagnosis.


[About the use of healthcare application information]
This application confirms the permission of the permission for the healthcare application interlock at the first question. We will confirm whether you can use the HealthKit framework provided by Apple to obtain the step count value registered in the "Healthcare" application on your iPhone. Step values ​​are automatically obtained for the study. If you do not allow the transmission of this information, you can use the app without acquiring the information by proceeding without permission on the confirmation screen.

## Key features

- 5-minute dry eye measurement
- Lifestyle correlation tracking
- Dry eye status map
- Contribution to university research
- Visual results on graphs and calendars
- Privacy-protected data

## Recent user reviews (10 of 18)

All indexed reviews: https://appshunter.io/ios/app/dryeyerhythm/id1164781008/reviews.md

### 1/5 — 瞬きしてないのにカウントされる

*2025-03-30, version 5.0.2*

回数が正確にカウントされないため、全く参考にならない。

### 1/5 — どうして年収や教育程度を入力？

*2022-03-15, version 4.2.1*

人種や年齢はまあ納得出来たけど使い始めるには年収や教育レベルを入力させられる。ユーザー視点では無く研究のためのデータ収集が目的の様子。

### 1/5 — なぜ年収データが必要？

*2021-08-04, version 4.1.0*

アプリインストール後に基本情報を登録するが、なぜ年収のデータが必要なのでしょうか？
情報収集の目的が不明確で、この時点で利用をやめました。

### 1/5 — カウントできてない

*2021-03-11, version 4.1.0*

まばたきのカウントが一番重要なのに、まともに機能してなかったら全く意味ない。即削除した。

### 1/5 — 不具合

*2020-02-19, version 2.0.1*

最初の同意するボタンを押した後、また最初からやり直しし、同じことの繰り返しになってる。

### 1/5 — UNABLE TO GET PAST SIGNING UP

*2019-12-10*

I HAVE TRIED SIGHING INTO THE APP AND HAVE TRIED SEVERAL TIMES BUT UNABLE TO!!!
AS A PHYSICIAN I WOULD LIKE TO SEE THE RESULTS WHEN PERFORMED BUT UNABLE TO DO SO. 
PLEASE ADDRESS THIS PROBLEM.

### 1/5 — 同意しても、またスタートに戻ってしまう

*2018-04-01, version 2.0.0*

何度も繰り返しになります。iPhone x。OS 11.3

### 5/5 — まばたき測定は、参考資料。

*2016-12-03, version 1.0.2*

ドライアイ測定のアプリで、まばたき測定や質問に答えていきます。まばたき測定は頭をちゃんと入れないとまばたき回数が進みやすいようです。
まばたき測定は参考資料程度なので、続けて測っていきたいと思います。

### 1/5 — 信じられないくらいのポンコツ

*2016-12-01, version 1.0.1*

UI/UXを専門にする会社に順天堂大学が騙されて数百万円はらってしまったのかと思うと気の毒でならない。アプリの基本的な操作がUXとは何なのかと思うような使いにくさで、肝心の瞬きカウントもほとんど機能していない。インドの外注クオリティに高い金を順天堂大学に払わせたという意味では、このアプリの開発会社は賞賛に値する。

### 1/5 — データ転送できない

*2016-11-26, version 1.0.1*

測定後のデータ転送が、1日経っても終わりません

## Frequently asked questions about DryEyeRhythm

### How does DryEyeRhythm measure dry eye?

DryEyeRhythm uses your smartphone's camera for a blink check and includes questionnaire input to assess your dry eye score. Continuous measurement for 7 days is recommended for best results.

### Can DryEyeRhythm diagnose dry eye?

No, the measurement results from DryEyeRhythm are not a doctor's diagnosis. If you have concerning symptoms, please consult a medical professional for a proper diagnosis.

### What kind of lifestyle data can I track with DryEyeRhythm?

You can enter lifestyle information such as stress levels, sleep duration, and time spent looking at monitors. This helps you see correlations between your daily dry eye score and your habits.

### Is my data safe with DryEyeRhythm?

Yes, collected data does not contain personally identifiable information, ensuring privacy. You can also withdraw your consent for research participation at any time.

### How is the data from DryEyeRhythm used?

Anonymized big data is used for dry eye research by Juntendo University ophthalmology. Research results may be published in academic presentations or journals.

### What devices does DryEyeRhythm support?

DryEyeRhythm is available for iPhone and iPod devices. The app is rated for users aged 17 and older.

### How often is DryEyeRhythm updated?

The latest version is 5.0.4, last updated on February 27, 2026. Updates are released to improve functionality and research data collection.

### Does DryEyeRhythm have ads?

No, DryEyeRhythm does not contain advertisements. It is a free application focused on providing a research tool for dry eye assessment.

## Version history (last 5 releases)

### 5.0.6 — 2026-07-08

some minor fixes.

### 5.0.5 — 2026-06-18

some minor fixes.

### 5.0.4 — 2026-02-27

some minor fixes.

### 5.0.3 — 2025-12-01

Fixed some bugs.

### 5.0.2 — 2024-06-21

Fixed some bugs and improved performance.

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## More apps by 順天堂大学

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All apps by 順天堂大学: https://appshunter.io/developer/1080910962

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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 2026-07-21.*