# Coordination and Response vs Merge Explorer

The clearest difference is review sentiment: Merge Explorer at 46% against Coordination and Response's 0%. Merge Explorer also leads on price (Free vs $0.99) and rating (4.1 vs 1.0). Coordination and Response's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 15.0). On ads and device support there is nothing between them.

Merge Explorer is free to download; Coordination and Response costs $0.99 up front. Merge Explorer sells 4 in-app purchases, starting at $9.99 per month. Coordination and Response asks for nothing beyond the download.

Merge Explorer holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Merge Explorer has 279 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Coordination and Response's written reviews are positive against 46% of Merge Explorer's.

Coordination and Response ships an update every 28 months, Merge Explorer monthly. The most recent releases landed on June 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Coordination and Response | Merge Explorer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/coordination-and-response/id1198448447/reviews) | **[4.1 (279 ratings)](https://appshunter.io/ios/app/merge-explorer/id1453098606/reviews)** |
| Number of ratings | 1 | **279** |
| Positive reviews | 0.0% of reviews | **46.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 24 MB | 1.3 GB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [Merge Apps](https://appshunter.io/developer/1253049593) |

## What reviewers say

### Coordination and Response

[App page](https://appshunter.io/ios/app/coordination-and-response/id1198448447)

This interactive educational app helps students aged 11-15 learn about the human nervous system, hormones, and related biological concepts through colorful visuals and hands-on activities. It offers a learning module, practice exercises, and a quiz to reinforce understanding of coordination and response biology.

**Highlights:** Learn about nervous system and hormones, Interactive DIY activities, Challenging quiz section, Colorful visual aids, Student-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Merge Explorer

[App page](https://appshunter.io/ios/app/merge-explorer/id1453098606)

Explore over 100 interactive science simulations using a smartphone and a Merge Cube. Investigate volcanoes, sharks, the solar system, and more with hands-on activities and quizzes. Ideal for K-8 students learning science at school or home.

**Highlights:** Over 100 science simulations, Interactive Merge Cube experiences, Hands-on learning activities, Built-in quizzes, NGSS-aligned K-8 curriculum, Physical, Life, and Earth/Space Science topics

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Merge EDU Individual | $9.99 | per month |
| Explorer Premium Monthly | $9.99 | per month |
| Merge EDU Individual | $99.99 | per year |
| Explorer Premium Annual | $99.99 | per year |

**What reviewers like**

- 👍 Easy for young students
- 💡 Flexible for lesson needs
- 🔬 Used for research and experiments
- 💡 Introduces new content exploratorily
- 🤩 Engaging and versatile for learning

**What reviewers complain about**

- 💰 Expensive purchase
- 💰 Forced subscription for software
- 💰 Cannot view software before paying
- 💰 Money trap
- 💰 Only for rich people

**Reported bugs**

- App crashes on iPad
- App crashes when pressing play
- Camera not working in app
- Black screen when using cube or camera
- VR function broken

**Requested features**

- Make the app free to play
- Add more fun things, not just learning
- Bring back the fun apps (time bomb, block courses)
- Allow users to create their own games for the merge cube
- Add a way to reset quizzes for class sets of devices


## Frequently asked questions

### Is Coordination and Response free?

Coordination and Response costs $0.99, with no in-app purchases.

### Is Merge Explorer free?

Merge Explorer is free to download, with in-app purchases available.

### Which has better reviews, Coordination and Response or Merge Explorer?

Merge Explorer is rated higher. Coordination and Response averages 1.0 out of 5 from 1 ratings, while Merge Explorer averages 4.1 from 279 ratings.

### Do Coordination and Response or Merge Explorer have ads?

Neither Coordination and Response nor Merge Explorer shows ads.

### Which is updated more often, Coordination and Response or Merge Explorer?

Coordination and Response ships an update every 28 months, and Merge Explorer monthly. Most recently, Coordination and Response was updated on June 1, 2026 and Merge Explorer on October 12, 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.*