# mozaik3D vs Merge Object Viewer

The clearest difference is rating: Merge Object Viewer at 4.5 against mozaik3D's 4.2. mozaik3D's advantage is review sentiment (58% vs 48%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. mozaik3D sells 2 one-off in-app purchases and Merge Object Viewer sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Merge Object Viewer holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 141 and 390 respectively. Written reviews complicate that: 58% of mozaik3D's written reviews are positive against 48% of Merge Object Viewer's, so the app with the better star average is not the one people write more warmly about.

mozaik3D ships an update every 5 weeks, Merge Object Viewer monthly. The most recent releases landed on September 19, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | mozaik3D | Merge Object Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (141 ratings)](https://appshunter.io/ios/app/mozaik3d-explore-and-learn/id1064850237/reviews) | **[4.5 (390 ratings)](https://appshunter.io/ios/app/merge-object-viewer/id1367544362/reviews)** |
| Number of ratings | 141 | **390** |
| Positive reviews | **58.3% of reviews** | 48.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 447 MB | 414 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MOZAIK Education Ltd.](https://appshunter.io/developer/1064850236) | [Merge Apps](https://appshunter.io/developer/1253049593) |

## What reviewers say

### mozaik3D

[App page](https://appshunter.io/ios/app/mozaik3d-explore-and-learn/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)


### Merge Object Viewer

[App page](https://appshunter.io/ios/app/merge-object-viewer/id1367544362)

Explore hundreds of 3D digital teaching aids with this app. Students can interact with models of rocks, mammals, cells, and more. The app also allows users to upload and view their own 3D objects on a compatible device.

**Highlights:** Hundreds of 3D teaching aids, Interactive 3D models, Learn about science and biology, Upload and view custom 3D objects, Hands-on digital learning

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

**In-app purchases (4)**

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

**What reviewers like**

- 🚀 Engaging AR STEM tool
- 👍 Intuitive interface
- 👍 Seamless object merging
- 👍 Extensive file format support
- 👍 Convenient sharing options

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 Slow rendering/loading
- 🐛 Compatibility issues on older devices
- 🔒 Paywall for full access
- 🐛 Unstable login/account management

**Reported bugs**

- Objects not loading or displaying incorrectly
- App freezing or closing unexpectedly
- Labeling/annotation issues with 3D objects
- Compatibility problems on iPads and older iOS versions

**Requested features**

- Adjustable lighting for 3D objects
- Ability to snap objects together
- Camera button for capturing scenes
- Restore VR support
- More free 3D content options


## Frequently asked questions

### Is mozaik3D free?

mozaik3D is free to download, with in-app purchases available.

### Is Merge Object Viewer free?

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

### Which has better reviews, mozaik3D or Merge Object Viewer?

Merge Object Viewer is rated higher. mozaik3D averages 4.2 out of 5 from 141 ratings, while Merge Object Viewer averages 4.5 from 390 ratings.

### Do mozaik3D or Merge Object Viewer have ads?

Neither mozaik3D nor Merge Object Viewer shows ads.

### Which is updated more often, mozaik3D or Merge Object Viewer?

mozaik3D ships an update every 5 weeks, and Merge Object Viewer monthly. Most recently, mozaik3D was updated on September 19, 2026 and Merge Object Viewer on August 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.*