# mozaik3D vs HMH Science Dimensions

The clearest difference is rating: mozaik3D at 4.2 against HMH Science Dimensions's 2.4. mozaik3D also leads on review sentiment (58% vs 25%) and ratings volume (141 vs 16). HMH Science Dimensions'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. mozaik3D sells 2 one-off in-app purchases. HMH Science Dimensions asks for nothing beyond the download.

mozaik3D holds the better App Store score, 4.2 against 2.4. That said, the two scores are not equally well evidenced: mozaik3D has 141 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 58% of mozaik3D's written reviews are positive against 25% of HMH Science Dimensions's.

mozaik3D ships an update every 5 weeks, HMH Science Dimensions every 2 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | mozaik3D | HMH Science Dimensions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (141 ratings)](https://appshunter.io/ios/app/mozaik3d-explore-and-learn/id1064850237/reviews)** | [2.4 (16 ratings)](https://appshunter.io/ios/app/hmh-science-dimensions/id1384935325/reviews) |
| Number of ratings | **141** | 16 |
| Positive reviews | **58.3% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 447 MB | 227 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MOZAIK Education Ltd.](https://appshunter.io/developer/1064850236) | [Houghton Mifflin Harcourt](https://appshunter.io/developer/409368007) |

## 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)


### HMH Science Dimensions

[App page](https://appshunter.io/ios/app/hmh-science-dimensions/id1384935325)

This augmented reality app transforms book covers into interactive science experiments. Students can scan their textbooks to launch 3D models and explore concepts like weather, solar energy, and the solar system. It's designed to make learning engaging and fun for young students.

**Highlights:** Augmented reality science experiments, Scan book covers to activate content, Interactive 3D models, Explores various science topics, Engaging learning experience, Group or pair work friendly

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is mozaik3D free?

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

### Is HMH Science Dimensions free?

HMH Science Dimensions is free to download, with no in-app purchases.

### Which has better reviews, mozaik3D or HMH Science Dimensions?

mozaik3D is rated higher. mozaik3D averages 4.2 out of 5 from 141 ratings, while HMH Science Dimensions averages 2.4 from 16 ratings.

### Do mozaik3D or HMH Science Dimensions have ads?

Neither mozaik3D nor HMH Science Dimensions shows ads.

### Which is updated more often, mozaik3D or HMH Science Dimensions?

mozaik3D ships an update every 5 weeks, and HMH Science Dimensions every 2 months. Most recently, mozaik3D was updated on October 15, 2026 and HMH Science Dimensions on October 10, 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.*