# HMH Science Dimensions vs Assemblr EDU

The clearest difference is review sentiment: Assemblr EDU at 100% against HMH Science Dimensions's 25%. Assemblr EDU also leads on rating (4.2 vs 2.3) and update cadence (every 2 weeks vs every 2 months). HMH Science Dimensions's advantage is in-app purchases (none vs 16) and ratings volume (17 vs 5). On price, ads and device support there is nothing between them.

Both are free to download. Assemblr EDU sells 16 in-app purchases, starting at $1.99 per 7 days. HMH Science Dimensions asks for nothing beyond the download.

Assemblr EDU holds the better App Store score, 4.2 against 2.3. Both are backed by a comparable volume of ratings — 17 and 5 respectively. Written reviews point the same way: 25% of HMH Science Dimensions's written reviews are positive against 100% of Assemblr EDU's.

HMH Science Dimensions ships an update every 2 months, Assemblr EDU every 2 weeks. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | HMH Science Dimensions | Assemblr EDU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (17 ratings)](https://appshunter.io/ios/app/hmh-science-dimensions/id1384935325/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/assemblr-edu-learn-in-3d-and-ar/id1505499586/reviews)** |
| Number of ratings | **17** | 5 |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 227 MB | 5 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Houghton Mifflin Harcourt](https://appshunter.io/developer/409368007) | [Assemblr](https://appshunter.io/developer/1425741171) |

## What reviewers say

### 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


### Assemblr EDU

[App page](https://appshunter.io/ios/app/assemblr-edu-learn-in-3d-and-ar/id1505499586)

This platform empowers educators and students with interactive 3D and AR learning experiences. Access ready-made lessons, utilize extensive 3D teaching aids, and create custom projects with an easy drag-and-drop editor. Facilitate virtual classes and bring student creations to life in augmented reality.

**Highlights:** Hundreds of ready-to-use 3D/AR topics, 6,000+ animated 3D teaching aids, Drag-and-drop 3D/AR project editor, Augmented reality project presentations, Virtual class setup and connection, Compatible with all devices

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Plan 1 Week | $1.99 | per 7 days |
| Individual Plan 1 Month | $4.99 | per month |
| Group Plan (3 Seats) | $4.99 | per month |
| Single Monthly | $8.00 | per month |
| CREATOR EDU MONTHLY (+350 BLR) | $8.99 | per month |
| CREATOR EDU MONTHLY (+350 BLR) | $20.00 | per month |
| Single Yearly | $80.00 | per year |
| Group Yearly | $209.99 | per year |
| CREATOR EDU MONTHLY (+350 BLR) | $250.00 | per month |
| Custom Marker Voucher | $2.99 | one-time |
| Custom Marker Voucher 5 | $13.99 | one-time |
| 500 BLR Coins | $14.49 | one-time |
| Custom Marker Voucher 10 | $24.99 | one-time |
| 1000 BLR Coins | $28.49 | one-time |
| 1500 BLR Coins | $42.90 | one-time |
| 2000 BLR Coins | $57.00 | one-time |


## Frequently asked questions

### Is HMH Science Dimensions free?

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

### Is Assemblr EDU free?

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

### Which has better reviews, HMH Science Dimensions or Assemblr EDU?

Assemblr EDU is rated higher. HMH Science Dimensions averages 2.3 out of 5 from 17 ratings, while Assemblr EDU averages 4.2 from 5 ratings.

### Do HMH Science Dimensions or Assemblr EDU have ads?

Neither HMH Science Dimensions nor Assemblr EDU shows ads.

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

HMH Science Dimensions ships an update every 2 months, and Assemblr EDU every 2 weeks. Most recently, HMH Science Dimensions was updated on October 21, 2026 and Assemblr EDU on October 27, 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.*