Snellen Chart is a medical app developed by Fonlow.
Download Statistics
Snellen Chart has been downloaded 26 thousand times. In the last 30 days, the app was downloaded 610 times.
User Ratings
Snellen Chart is rated 4.33 out of 5 stars. The rating is based on 37 ratings.
App Information
Snellen Chart is FREE to download. The APK download size is 32.65 MB. The latest version available is 2.7.1. The last update was on March 27, 2026.
Technical Requirements
Snellen Chart requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2019.
Description
Prevention is better than cure. Designed for children older than 6, parents with young children, and general practitioners, this eyechart app displays optically precise optotypes of Snellen Chart for you to measure distant visual acuity accurately in order to detect nearsightedness or myopia early, so you can take preventive measures and seek help from medical professional early to prevent pseudomyopia from becoming myopia, or prevent nearsightedness from getting worse.
Predefined Test Distances: * 6, 5, 4, 3, and 2 meters * 20, 15, 12, 10, 6 feet
Scenarios: 1. "Doctor" and "Patient". 2. Self-diagnosis with a mirror. 3. Self-diagnosis with a Bluetooth keyboard. 4. Self-diagnosis within arm's reach.
Notations： 1. Decimal (0.50) 2. Fraction (20/40) 3. LogMAR (0.30) 4. Fraction (5/10) 5. Fraction (6/12) 6. MAR (2) 7. VAS or VAR (85)
Test Modes: 1. Autoplay 2. Manual
In Auto scoring, you use the swiping gestures to indicate correct readings or wrong readings, and the app calculates the score.
Through enabling “Record Scores” in Settings, you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded.
In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
Checking for myopia or overall eyesight takes several procedures and the first step is often to test distant visual acuity through an eye chart. And the decrement of visual acuity may indicate the development of myopia.
Disclaimer: While this app may replace Snellen Chart in print, however it cannot replace doctors and optometrists who carry out comprehensive eye exam for your basic eye health. Please visit optometrists regularly and seek help from medical professional at early signs of vision problems.
Recent changes: 1. Support 16KB Memory Page Sizes. 2. arm64-v8a only. 3. Adjust the privacy policy to clearly state the data usage.
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Looks like it will be good... But swiping causes my phone to exit. Having arrows on screen makes more sense. Using gestures causes complications. Also, how far away from someone's face should the phone be?
★★★★★Otie Brown· Sep 22, 2025
I do myopia prevention. Having an easy to use Snellen, is critical to get out of myopia.
★★★★☆Pulkit Sharma· Jul 27, 2022
Nice app to vision acuity test at home. But you have to knowledge about 6/6 6/9, 20/40 20/20 etc. etc
Google Play Rankings for Snellen Chart
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Technologies used by Snellen Chart
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