# DERS vs Maker Ukulele AR Instructions

The clearest difference is device support: Maker Ukulele AR Instructions at 3 against DERS's 1. Maker Ukulele AR Instructions also leads on iOS requirement (15.0 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

DERS ships an update every 5 months, Maker Ukulele AR Instructions every 8 months. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | DERS | Maker Ukulele AR Instructions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ders/id1197202080/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 8 months |
| Monetization | Free | — |
| Size | 0 MB | 436 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [National Centre for Montessori in the Public Sector, Inc.](https://appshunter.io/developer/1197202079) | [Chord Hero Limited](https://appshunter.io/developer/1547564566) |

## What reviewers say

### 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, Vision Pro support

**In-app purchases:** none


### Maker Ukulele AR Instructions

[App page](https://appshunter.io/ios/app/maker-ukulele-ar-instructions/id1596429460)

**In-app purchases:** none


## Frequently asked questions

### Is DERS free?

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

### Is Maker Ukulele AR Instructions free?

Maker Ukulele AR Instructions is free to download, with no in-app purchases.

### Do DERS or Maker Ukulele AR Instructions have ads?

Neither DERS nor Maker Ukulele AR Instructions shows ads.

### Which is updated more often, DERS or Maker Ukulele AR Instructions?

DERS ships an update every 5 months, and Maker Ukulele AR Instructions every 8 months. Most recently, DERS was updated on October 3, 2026 and Maker Ukulele AR Instructions on October 14, 2026.

---

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