# Eye Speed — Test your visual reaction time

> App to test and measure visual reaction time for research and personal insight. (iPhone/iPad app by Jose-Manuel Alonso.)

- Source: https://appshunter.io/ios/app/eye-speed/id1033931375 (this page in markdown: same URL + `.md`)
- Developer: [Jose-Manuel Alonso](https://appshunter.io/developer/645396431)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 1 MB
- Languages: English
- Released: 2015-09-24
- Data updated: 2026-07-16
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/eye-speed/id1033931375/reviews.md

## What is Eye Speed?

If you've ever wondered how quickly your brain can process visual information, then Eye Speed is just the app for you! Eye Speed provides users with a test to measure their visual reaction times. The purpose of this app is to provide eye doctors with a tool for vision research and inspire new visual tests to monitor the progression of visual disorders. So not only will you be able to measure your reaction time, but also contribute to world-class vision research!
 
The Pre-Trial stage is where you can configure the trial's settings to your liking. You may adjust the Noise Square Width, Target Width, and Black area to the total area ratio in order to modify the difficulty. Please note that all three settings have bounds, if you set a value outside the bounds, then you will receive a warning, and the settings will reset to the default values.
 
The trial stage is the bulk of the application. When ready, you may start the test by pressing the tab 'Start Trial' at the bottom. After the tab is pressed, a visual stimulus will appear on the screen. The visual stimulus is composed of black and white squares embedded in a noisy background. You must count the number of Target squares as fast as you can and press the tab with the correct number: |1| |2| |3|. Once a tab is pressed, another stimulus appears. This sequence is repeated until the number of trails set is met. A minimum number of trials (5) is required to obtain reliable data and contribute to the research. However, you may finish the test at any time by pressing the tab 'End Trial'.
 
The post-trial is the final stage of the application. Here, you can see how well you did during the test. If you completed 5 or more trials, then there is an option to mail the data to our laboratory and to the user's email address. The data is mailed in the form of a data sheet (.csv file) that contains information about the data collected (e.g., reaction times and correct responses for the individual trials) and information about the variables selected for the test (the configuration done in the Pre-Trial). Please check our privacy policy for any concerns on data collection and processing. After the data is mailed, the app provides a performance score based on the speed and accuracy of the count. The score ranges from 0 to 100 (100 being the best performance). Thank you for downloading our app and contributing to our research!

## Key features

- Visual reaction time testing
- Configurable trial settings
- Data export via email
- Performance scoring
- Contribution to vision research
- Adjustable difficulty parameters

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/eye-speed/id1033931375/reviews.md

### 5/5 — Great App!

*2022-06-14*

The white and black contrast used in the pixels is great for measuring the reaction time!

## Frequently asked questions about Eye Speed

### What is Eye Speed used for?

Eye Speed is designed to measure your visual reaction time. It serves as a tool for eye doctors in vision research and aims to inspire new tests for monitoring visual disorders.

### Can I customize the tests in Eye Speed?

Yes, in the Pre-Trial stage, you can adjust settings like Noise Square Width, Target Width, and the ratio of black area to total area to modify the test's difficulty.

### How do I participate in vision research with Eye Speed?

After completing a minimum of 5 trials, you have the option to mail your collected data to the laboratory and to your own email address. This data contributes to world-class vision research.

### What kind of data does Eye Speed collect and share?

The app collects data such as reaction times and correct responses for individual trials, along with the test configuration variables. A CSV file containing this information is mailed if you choose to share your data.

### What is the performance score in Eye Speed?

After completing the test, Eye Speed provides a performance score ranging from 0 to 100, with 100 being the best. This score is based on your speed and accuracy during the trials.

### Is Eye Speed available on Android devices?

Based on the provided data, Eye Speed is supported on iPhone, iPad, and iPod. Information regarding Android compatibility is not available.

### How often is Eye Speed updated?

The latest version of Eye Speed is 2.1.1, and it was last updated on June 29, 2022. This indicates a release cycle of approximately once every 1-2 years.

### Does Eye Speed have ads?

No, Eye Speed does not contain advertisements. The app is free to download and use without any ad interruptions.

## Version history (last 3 releases)

### 2.1.1 — 2022-06-29

- Lowered minimum number of trials required to 5
- Updated the layout
- added dark/light mode
- fixed a few bugs

### 2.0 — 2022-06-14

- Now compatible with a wider range of iPhone and iPad devices!
- Bug fixes & stability improvements
- Improved UI and Layout design

### 1.0 — 2015-09-24

This app has been updated by Apple to display the Apple Watch app icon.

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## More apps by Jose-Manuel Alonso

- [iReplica](https://appshunter.io/ios/app/ireplica/id1639585596)

All apps by Jose-Manuel Alonso: https://appshunter.io/developer/645396431

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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 2026-07-16.*