# Explain 3D FREE vs mozaikApp

The clearest difference is review sentiment: mozaikApp at 58% against Explain 3D FREE's 14%. mozaikApp also leads on rating (4.2 vs 2.0) and ratings volume (142 vs 5). Explain 3D FREE's advantage is in-app purchases (none vs 2) and iOS requirement (9.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. mozaikApp sells 2 one-off in-app purchases. Explain 3D FREE asks for nothing beyond the download.

mozaikApp holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: mozaikApp has 142 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 14% of Explain 3D FREE's written reviews are positive against 58% of mozaikApp's.

Explain 3D FREE ships an update every 6 weeks, mozaikApp every 5 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Explain 3D FREE | mozaikApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (5 ratings)](https://appshunter.io/ios/app/explain-3d-free-understand-how-stuff-works/id968247111/reviews) | **[4.2 (142 ratings)](https://appshunter.io/ios/app/mozaikapp/id1064850237/reviews)** |
| Number of ratings | 5 | **142** |
| Positive reviews | 14.3% of reviews | **58.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 84 MB | 451 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Explain 3D](https://appshunter.io/developer/1019479194) | [MOZAIK Education Ltd.](https://appshunter.io/developer/1064850236) |

## What reviewers say

### Explain 3D FREE

[App page](https://appshunter.io/ios/app/explain-3d-free-understand-how-stuff-works/id968247111)

Explore interactive 3D simulations to understand how various systems and objects function. This free version includes a 4-stroke engine simulation, with more available in the full version. It aims to make learning engaging and fun through detailed models and animations.

**Highlights:** Interactive 3D simulations, Understand how things work, Car engine simulation (free), Detailed 3D models and animations, Engaging educational content, Intuitive interface

**Features:** Vision Pro support

**In-app purchases:** none


### mozaikApp

[App page](https://appshunter.io/ios/app/mozaikapp/id1064850237)

This app makes learning engaging with over 1300 interactive 3D scenes covering history, science, math, and more. It offers digital lessons, quizzes, and narration to enhance understanding. Explore worlds in walk or VR mode, and practice languages with multi-language support.

**Highlights:** 1300+ interactive 3D scenes, Digital lessons, images, videos, audio, Quizzes and activities, Narrations and animations, Walk mode & VR mode, Multi-language support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mozaik STUDENT - (1 Year) | $44.99 | one-time |
| Mozaik TEACHER - (1 Year) | $119.99 | one-time |

**What reviewers like**

- ✨ Excellent educational tool
- 💡 Innovative 3D scenes
- 📚 Wide range of subjects
- 👍 User-friendly for learning
- 🚀 Fast performance (when working)

**What reviewers complain about**

- 🐛 Frequent login issues
- 🐌 Slow loading times
- ❌ Content not loading
- 🚫 Registration problems
- 📉 Glitchy and buggy

**Reported bugs**

- Login fails, password incorrect
- Cannot register, country/data not accepted
- Account not working after registration
- Adrenaline (advanced) scene shows error
- Audio cuts off in Human body (male) scene

**Requested features**

- Update lymphatic system scene with 3D cross-sections
- Add 3D scene about domestic cat
- Add 3D scene about digestive system
- Add narration for better understanding
- More topics for small kids (plants, flowers, animals)


## Frequently asked questions

### Is Explain 3D FREE free?

Explain 3D FREE is free to download, with no in-app purchases.

### Is mozaikApp free?

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

### Which has better reviews, Explain 3D FREE or mozaikApp?

mozaikApp is rated higher. Explain 3D FREE averages 2.0 out of 5 from 5 ratings, while mozaikApp averages 4.2 from 142 ratings.

### Do Explain 3D FREE or mozaikApp have ads?

Neither Explain 3D FREE nor mozaikApp shows ads.

### Which is updated more often, Explain 3D FREE or mozaikApp?

Explain 3D FREE ships an update every 6 weeks, and mozaikApp every 5 weeks. Most recently, Explain 3D FREE was updated on October 13, 2026 and mozaikApp on October 24, 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.*