# Berkeley Contrast Squares — Contrast Sensitivity Test

> Contrast sensitivity test for low vision patients. (iPhone/iPad app by Scott Fitz.)

- Source: https://appshunter.io/ios/app/berkeley-contrast-squares/id979063261 (this page in markdown: same URL + `.md`)
- Developer: [Scott Fitz](https://appshunter.io/developer/979063260)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Languages: English
- Released: 2019-08-30
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/berkeley-contrast-squares/id979063261/reviews.md

## What is Berkeley Contrast Squares?

An app for testing contrast sensitivity. Fast, accurate, and simple for the subject. Measures Weber contrast sensitivity on standard logarithmic scale from 0.0 to 2.3.  Because this test does not require high visual acuity, it is appropriate for use with low vision patients.  By Ian Bailey O.D., M.S. and Scott Fitz, O.D.

## Key features

- Contrast sensitivity testing
- Weber contrast measurement
- Logarithmic scale (0.0-2.3)
- Suitable for low vision patients
- Fast and accurate

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/berkeley-contrast-squares/id979063261/reviews.md

### 2/5 — Really badly designed UI

*2024-07-19*

On the iPad: Crashes at the end of every test. Crashes every time you tap the Results section, therefore you can never see your results. 
On the iPhone: No crashes but badly rendered UI in portrait orientation where the text runs over the controls in the Settings section and text runs over other text on the Results page.

## Frequently asked questions about Berkeley Contrast Squares

### What is Berkeley Contrast Squares used for?

Berkeley Contrast Squares is used to test contrast sensitivity. It measures Weber contrast sensitivity on a standard logarithmic scale, which is useful for assessing vision.

### Is Berkeley Contrast Squares suitable for people with low vision?

Yes, the test does not require high visual acuity, making it appropriate for use with low vision patients. It provides a simple and accurate measurement.

### What is the range of measurement for Berkeley Contrast Squares?

The app measures Weber contrast sensitivity on a standard logarithmic scale ranging from 0.0 to 2.3. This provides a quantitative assessment of contrast perception.

### How accurate is Berkeley Contrast Squares?

The app is described as fast, accurate, and simple for the subject. User feedback, reflected in its 5.0-star rating from 4 ratings, suggests a high level of satisfaction with its performance.

### What devices support Berkeley Contrast Squares?

Berkeley Contrast Squares is available on iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.

### When was Berkeley Contrast Squares last updated?

The latest version of Berkeley Contrast Squares was released on June 10, 2022. This indicates recent maintenance and potential improvements.

### Does Berkeley Contrast Squares have ads?

No, Berkeley Contrast Squares does not contain advertisements. The app is free to download and use without any ad interruptions.

### What is the age rating for Berkeley Contrast Squares?

Berkeley Contrast Squares has an age rating of 4+. This means it is suitable for children aged 4 and above, as well as adults.

## Version history (last 4 releases)

### 1.2.1 — 2022-06-10

Updated screenshots

### 1.2.0 — 2022-06-04

Improved results screen layout. Now compatible with IOS version 12 and up.

### 1.1.1 — 2019-09-02

Added some useful links to the in-app documentation.

### 1.1.0 — 2019-08-30

No release notes.

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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 2026-06-10.*