# Eye Charts — check and track distant vision

> Optically precise distance vision testing and tracking app. (iPhone/iPad app by zijian huang.)

- Source: https://appshunter.io/ios/app/eye-charts/id1442509969 (this page in markdown: same URL + `.md`)
- Developer: [zijian huang](https://appshunter.io/developer/1442509968)
- Category: Medical, Health & Fitness
- Price: $4.99
- Rating: 3.50/5 from 29 App Store ratings · 36 written reviews indexed
- Age rating: 12+
- Requires: iOS 14.0 · 23 MB
- Languages: Russian, Hindi, Vietnamese, Arabic, Hebrew, Indonesian, European Spanish, Italian, Korean, Malay and 10 more
- Released: 2018-11-29
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/eye-charts/id1442509969/reviews.md

## What is Eye Charts?

Eye Charts is a professionally designed visual acuity testing app that makes it easy to accurately check, record, and track vision over time in children aged 6 and above, whether you are a parent monitoring a child’s eyesight at home or a healthcare professional performing routine screening in practice. Early detection of myopia allows you to take preventive action, seek medical advice promptly, and prevent pseudomyopia from worsening into myopia or stop nearsightedness from deteriorating further.

DESIGNED TO REDUCE VARIABILITY
Unlike paper charts that fade, warp, or become memorized over time, Eye Charts presents optically accurate optotypes that are randomized for every test. This helps ensure more meaningful results for repeated testing at home, in schools, clinics, or telehealth settings.

Supported charts include:
* Snellen
* ETDRS
* Landolt C
* Tumbling E
* HOTV
* Numbers
* Shapes

The charts use LogMAR scaling of letter size across rows, and support multiple visual acuity notations for scoring, including: Fraction, LogMAR, MAR, Decimal and VAS.

Flexible test distances allow accurate use in small rooms, hallways, or ad‑hoc spaces.

Displayed on iOS and Android devices, Eye Charts is self‑illuminated, so the chart’s visibility does not depend on room lighting or weather. Screen brightness is adjustable and can be set appropriately for longer testing distances such as 6 meters.

Scenarios:
1. Doctor and Patient.
2. Self-diagnosis using a mirror – Stand in front of a mirror with the app in mirror mode, wearing an eye patch over one eye. The effective test distance is twice the distance between you and the mirror.
3. Self-diagnosis using a Bluetooth keyboard – Place the device a few meters away on a table, and use the keyboard arrow keys to indicate what you can read.

SEE TRENDS, NOT JUST SNAPSHOTS
Test results can be recorded for individual subjects and visualized over time using simple line graphs, making it easier to identify:
* Gradual changes in vision
* Stability after intervention

This longitudinal view is valuable for parents monitoring children’s eyesight and for clinicians tracking changes across visits.

INDEPENDENTLY EVALUATED ACCURACY
Eye Charts was previously published as Visual Acuity Charts. Under that name, it was independently evaluated in a peer‑reviewed academic study published in JAMA Ophthalmology and available via PubMed Central on https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7809609/. In that study, researchers objectively compared multiple iPhone‑based visual acuity apps by physically measuring optotype accuracy across devices. Visual Acuity Charts demonstrated the lowest measurement error among the apps evaluated, making it the most accurate app tested in that comparison.

Myopia detection involves several steps, with distance visual acuity testing often being the first. A decline in visual acuity may indicate the onset of myopia, enabling early intervention.

DISCLAIMER:
While this app may replace printed eye charts, it CANNOT replace doctors or optometrists who perform comprehensive eye exams essential for maintaining eye health. The app does not test for strabismus, esotropia, exotropia, hyperopia, or astigmatism—common early vision conditions. Please consult an optometrist regularly and seek professional medical advice at the first signs of visual acuity issues.

## Key features

- Optically precise optotypes
- Multiple eye chart types (Snellen, Tumbling E, Landolt C, ETDRS, HOTV, Numbers, Shapes)
- Customizable test distances (meters and feet)
- Mirror and Bluetooth keyboard testing modes
- Manual and auto-scoring test modes
- Visual acuity progression tracking
- LogMAR scoring

## Recent user reviews (10 of 36)

All indexed reviews: https://appshunter.io/ios/app/eye-charts/id1442509969/reviews.md

### 4/5 — Please add 20/400

*2025-01-10*

Wish this app included 20/400 and beyond. Could you add larger optotypes?

**Developer response:** But if John the patient can not see 20/200, isn't he already legally blind. Nevertheless, you can still test 20/400. For example, change the app's test distance to 10 feet, but actually test at 20 feet with an optotype of 20/200, the largest the app can display.

### 5/5 — Solid app

*2023-10-09*

My only suggestion is maybe have the letters appear in a row going down. Top can be 20/200 and the bottom is 20/20. Would make great for bedside screening

**Developer response:** Are you suggesting to have multiple rows? or you want to 2 meters test distance? I am aware that doctors have been using the app in wards. Shall we have a conversation by Email? please send to s AT Fonlow dot com or just use the app's "Send Message to Developer" feature.

### 4/5 — Please add 20/400

*2023-01-13, version 2.8.2*

I see bed side patients and most of them are low vision patients. The VA chart app I used to use is no longer supported so I downloaded this app. This app is great because it allows me to test with numbers (most dementia patients cannot read letters but they can still read numbers) l Wish this app had 20/400 and beyond. Could you add larger optotypes?

**Developer response:** But if John the patient can not see 20/200, isn't he already legally blind. Nevertheless, you can still test 20/400. For example, change the app's test distance to 10 feet, but actually test at 20 feet with an optotype of 20/200, the largest the app can display.

### 1/5 — 不显示字符高度....................

*2021-02-14*

不显示字符高度？一开始是显示的，后来就不显示了，设置里面打开也没用

**Developer response:** 仅在更改大小时出现一次。 尺寸供参考, 供你验证此App 很准确,当用把尺度量时。 您是阅读了视标以测试您的视力。
Appear once only when changing size. The size is only for reference. You read Optotype for testing your eyesight.

### 2/5 — 没办法自定义距离

*2020-12-06*

app里反馈了也没用 xsmax

**Developer response:** 您需要按键盘上的Enter确认更改。 这适用于需要输入数字的所有应用，这些应用由iOS的UI基本行为定义。
You need to press the Enter in the keypad to confirm the change. This applies to all apps that need number input, defined by the UI basic behavior of iOS.

### 2/5 — 很不准确

*2020-08-29*

标准对数视力表，6米远居然比5米的形状更小，那个E，也不能很好地上下左右随机变化，上下左右4个方向总是少了一个方向，只有3个方向，而且不是随机变化的，当时都是固定的，左上左上右，一直循环

**Developer response:** 6米的默认起始VA分数是0.32，而5米的默认起始VA分数是0.25。 如果VA分数相同，则6米处的视标大于5米处的视标。视标高度决定于距离和视力读数。
随机性基于每次应用程序的重启，因此对于每个最多每周进行一次测试的患者来说，随机性就足够了。
The default start VA score for 6 meter is 0.32, while the default start VA score for 5 meter is 0.25. If the same VA score, optotype at 6 meter is larger than optotype at 5 meter. The size of optotype is determined by distance and VA score.
The randomness is based on each app start, so it is random enough for each patient who may take a test at most weekly.

### 1/5 — Paid $5 for there to be no shapes!!

*2020-06-02*

My toddler doesn’t know his letters yet but he does know his shapes. I thought it had shapes but it turns out I paid for nothing.

**Developer response:** It was designed for children older than 6 as described in the app description. You may ask App Store for refund.

### 5/5 — Well written app

*2020-04-29*

The mirror mode is handy and interesting.

### 5/5 — So far so good

*2020-04-26, version 2.3*

At least I am almost certain that my boy is not having myopia for now after staying indoor for weeks. Nevertheless, it is still worth of visiting a local optometrist later.

### 5/5 — Updated

*2020-04-26, version 2.3*

Some other apps work with only old iPhones, and this one works with the latest ones.

## Frequently asked questions about Eye Charts

### What does this app do?

This app provides optically precise optotypes for measuring and tracking distant vision. It supports various standard eye charts and allows for custom test distances, making it useful for early detection of vision issues and monitoring their progression.

### What types of eye charts are supported?

The app supports several types of eye charts including Snellen, Tumbling E, Landolt C, ETDRS, HOTV, Numbers, and Shapes. Specific optotypes are available for each chart type, adhering to relevant standards like BS 4274-1:2003 for Snellen charts.

### How much does the app cost?

The app is available for free. There are no in-app purchases or advertisements mentioned in the provided description.

### Can this app replace a visit to the optometrist?

While this app can replace printed eye charts for distance vision testing, it cannot replace a comprehensive eye exam performed by a doctor or optometrist. It does not test for conditions like strabismus, hyperopia, or astigmatism.

### How can I test my vision using this app?

You can test your vision manually or use the auto-scoring mode where swipe gestures indicate readings. The app also offers scenarios for self-diagnosis using a mirror or a Bluetooth keyboard, allowing for flexible testing environments.

## Version history (last 5 releases)

### 3.6 face lifting — 2026-07-14

* UI improvements for small screens

### 3.5.1 — 2026-04-18

1. Support iPhone 17e, iPad Air (11-inch), iPad Pro (13-inch).
2. Target iOS 26.2.

### 3.5 — 2026-01-02

1. Added support for the 2025 iPad Pro models (11‑inch and 13‑inch).
2. Target iOS 26.
3. Fixed several minor bugs.

### 3.4.1 — 2025-09-28

1. Support iPhone 17, iPhone Pro, iPhone Pro Max and iPhone Air.

### 3.4 — 2025-08-27

1. Most built-in help contents are refined.
2. When the visual acuity notation is LogMAR, MAR or VAS, the scoring of the assessment is LogMAR Scoring.

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## More apps by zijian huang

- [Ishihara Color Blind Test](https://appshunter.io/ios/app/ishihara-color-blind-test/id6772382532)

All apps by zijian huang: https://appshunter.io/developer/1442509968

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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 2026-08-24.*