# DEM Calculator

> Medical aid for Developmental Eye Movement Test score calculation and assessment. (iPhone/iPad app by MakeMind.)

- Source: https://appshunter.io/ios/app/dem-calculator/id1173363940 (this page in markdown: same URL + `.md`)
- Developer: [MakeMind](https://appshunter.io/developer/950546232)
- Category: Medical
- Price: Free with in-app purchases
- Rating: 1.00/5 from 2 App Store ratings · 5 written reviews indexed
- Age rating: 12+
- Requires: iOS 8.0 · 43 MB
- Languages: American English
- Released: 2016-12-31
- Data updated: 2026-08-15
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/dem-calculator/id1173363940/reviews.md

## What is DEM Calculator?

The DEM Calculator is to be used in conjunction with the Developmental Eye Movement Test. It is designed to save test administrators valuable time spent calculating and assessing patient scores. This is achieved by automatically calculating the child's number naming speed and saccadic eye movement abilities based on their age or grade. 

(This free version will allow you to test children of age 6 or grade 1. It contains an in-app purchase to permanently unlock ages 6-13 and grades 1-8).
 
The App comes with an easy, single screen interface for fast decision making in a busy practice. Having it on your smart phone means you will have it available at all times. 
 
The DEM Calculator is simple to use. Enter the child's age or grade and start the timer when they begin the test. Errors such as transposition, additions, omissions and substitution of numbers can be recorded simultaneously. 
 
After repeating this for Test A, B & C, the App will calculate the percentile for Vertical Time, Horizontal Time, Errors and Ratio. Scores that are at risk will be highlighted orange, while scores that are abnormal will be highlighted in red. 
 
The child will be given an overall response based on their ratio. This can be: 
Type 1: Average Performance 
Type 2: Oculomotor Dysfunction
Type 3: Poor Automaticity of Number Naming
Type 4: Deficiencies in both Automaticity & Oculomotor skills 
 
Please remember this App is purely an aid and is not a replacement for clinical judgement. The DEM Calculator was made in association with Bernell Corporation.

## Key features

- Automatic score calculation
- Number naming speed assessment
- Saccadic eye movement analysis
- Age/grade based scoring
- Error recording
- Risk highlighting

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock grades and ages | $31.99 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/dem-calculator/id1173363940/reviews.md

### 1/5 — No refund!

*2023-05-19*

This app was bought by mistake and they would not refund my money! Very disappointed with this. I don’t even know what this app is for! So frustrating!

### 1/5 — Manque de précision

*2019-07-08*

Manque de précision ne donne pas la déviation standard

### 1/5 — Not even a free app when we already paid the app?

*2019-03-25*

And only the American grades?

### 5/5 — A great timesaver

*2017-03-03*

The Dem calculator has allowed me to assess my patients quickly and accurately. I have more confidence in my diagnosis with this App.

### 5/5 — Good app

*2017-01-21*

I can already see how this is useful. Great work

## Frequently asked questions about DEM Calculator

### What is the DEM Calculator used for?

The DEM Calculator is a medical aid designed to help test administrators quickly calculate and assess patient scores for the Developmental Eye Movement Test. It simplifies the process of evaluating number naming speed and saccadic eye movement abilities.

### What ages does the free version of DEM Calculator support?

The free version of the DEM Calculator allows you to test children of age 6 or grade 1. A one-time in-app purchase is available to unlock support for ages 6-13 and grades 1-8.

### How does DEM Calculator help with test administration?

DEM Calculator saves test administrators valuable time by automatically calculating scores and highlighting results that are at risk (orange) or abnormal (red). It provides an overall response based on the patient's ratio, categorizing performance types.

### What types of errors can DEM Calculator record?

DEM Calculator allows for the simultaneous recording of errors such as transposition, additions, omissions, and substitution of numbers during Test A, B, and C of the Developmental Eye Movement Test.

### Is DEM Calculator available on Android devices?

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

### How often is DEM Calculator updated?

The latest version of DEM Calculator is 1.6, which was last updated on July 5, 2017. This indicates a less frequent update cycle.

### What is the user rating for DEM Calculator?

DEM Calculator has a rating of 1.0 stars from 2 ratings. This suggests a very low user satisfaction based on the limited available feedback.

### Does DEM Calculator contain advertisements?

No, DEM Calculator does not contain advertisements. The application is free to download and use, with optional in-app purchases for full functionality.

## Version history (last 5 releases)

### 1.6 — 2017-07-05

This update from Apple will improve the functionality of this app. No new features are included.

- Bug fixing

### 1.5 — 2017-05-29

- Results formatting

### 1.4 — 2017-05-27

- Get results for both age and grade in the same test.

### 1.3 — 2017-03-03

Unlocking of age 13 for all users.

### 1.2 — 2017-02-13

- Change AppStore description and keywords.

## Apps similar to DEM Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Eye Workout: Recovery Exercise](https://appshunter.io/ios/app/eye-workout-recovery-exercise/id991324367) | 4.2 (235) | Free | Medical |
| [ColorBlind-Eye Exam](https://appshunter.io/ios/app/colorblind-eye-exam/id1082624097) | — | Free | Medical |
| [Sharp Chart 2020 LogMAR Chart](https://appshunter.io/ios/app/sharp-chart-2020-logmar-chart/id1500513811) | 5.0 (1) | Free | Medical |
| [Optical Dispensing Assistant 2](https://appshunter.io/ios/app/optical-dispensing-assistant-2/id827660005) | 5.0 (1) | Free | Medical |
| [Worth 4 Dot: Suppression Test](https://appshunter.io/ios/app/worth-4-dot-suppression-test/id1484471009) | — | Free | Medical |
| [Eye Emergency Manual](https://appshunter.io/ios/app/eye-emergency-manual/id777216623) | 5.0 (2) | Free | Medical |

---

*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 2026-08-15.*