# MN Executive Function Scale vs DERS

The clearest difference is rating: DERS at 5.0 against MN Executive Function Scale's 3.0. DERS also leads on monetization model (free vs subscription) and iOS requirement (8.2 vs 15.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DERS holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

MN Executive Function Scale ships an update every 2 months, DERS every 4 months. The most recent releases landed on September 2, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | MN Executive Function Scale | DERS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/mn-executive-function-scale/id967184252/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ders/id1197202080/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Subscription | **Free** |
| Size | 31 MB | 68 MB |
| Requires iOS | 15.1 | **8.2** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Reflection Sciences LLC](https://appshunter.io/developer/967184251) | [National Centre for Montessori in the Public Sector, Inc.](https://appshunter.io/developer/1197202079) |

## What reviewers say

### MN Executive Function Scale

[App page](https://appshunter.io/ios/app/mn-executive-function-scale/id967184252)

This app provides a brief, standardized assessment of executive function skills for ages 2 and up. Developed by neuroscience experts, it uses an engaging virtual card-sorting game to measure cognitive flexibility, working memory, and inhibitory control. Results are accessible via a secure web portal for tracking growth and early detection of difficulties.

**Highlights:** Standardized executive function assessment, Virtual card-sorting game, Adaptive to individual ability, Measures cognitive flexibility, working memory, inhibitory control, Secure web portal for score access and tracking, Early detection of EF difficulties, Formative assessment for educational programs

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### DERS

[App page](https://appshunter.io/ios/app/ders/id1197202080)

This tool assesses the quality of learning environments for children aged 2.5 to 12. It measures environmental design and implementation against desired developmental outcomes, focusing on executive functions, literacy, and social-emotional growth.

**Highlights:** Measures learning environment quality, Focuses on executive functions, Assesses literacy development, Evaluates social-emotional growth, Research-based environmental attributes, Classroom observation tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MN Executive Function Scale free?

MN Executive Function Scale is free to download, with no in-app purchases.

### Is DERS free?

DERS is free to download, with no in-app purchases.

### Which has better reviews, MN Executive Function Scale or DERS?

DERS is rated higher. MN Executive Function Scale averages 3.0 out of 5 from 2 ratings, while DERS averages 5.0 from 4 ratings.

### Do MN Executive Function Scale or DERS have ads?

Neither MN Executive Function Scale nor DERS shows ads.

### Which is updated more often, MN Executive Function Scale or DERS?

MN Executive Function Scale ships an update every 2 months, and DERS every 4 months. Most recently, MN Executive Function Scale was updated on September 2, 2026 and DERS on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*