# Engineering Adventures vs Osmo Numbers Classic

The clearest difference is monetization model: Engineering Adventures at free against Osmo Numbers Classic's free with in-app purchases. Engineering Adventures also leads on iOS requirement (8.0 vs 15.0). Osmo Numbers Classic's advantage is ratings volume (264 vs 3) and rating (4.0 vs 3.7). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Osmo Numbers Classic holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: Osmo Numbers Classic has 264 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Engineering Adventures's written reviews are positive against 54% of Osmo Numbers Classic's.

Engineering Adventures ships an update every 7 months, Osmo Numbers Classic every 2 months. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Engineering Adventures | Osmo Numbers Classic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/engineering-adventures/id724905971/reviews) | **[4.0 (264 ratings)](https://appshunter.io/ios/app/osmo-numbers-classic/id1017627073/reviews)** |
| Number of ratings | 3 | **264** |
| Positive reviews | 33.3% of reviews | **54.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 159 MB | 185 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Museum of Science](https://appshunter.io/developer/700803386) | [Tangible Play](https://appshunter.io/developer/799157444) |

## What reviewers say

### Engineering Adventures

[App page](https://appshunter.io/ios/app/engineering-adventures/id724905971)

This app complements an out-of-school engineering curriculum by providing audio messages triggered by QR codes in accompanying journals. It covers 11 different engineering units, from building earthquake-resistant structures to designing space gloves.

**Highlights:** QR code scanner, Audio messages from characters, 11 engineering units, Complements curriculum, Interactive learning

**Features:** macOS Compatibility

**In-app purchases:** none


### Osmo Numbers Classic

[App page](https://appshunter.io/ios/app/osmo-numbers-classic/id1017627073)

Engage children in hands-on math play by adding, counting, and multiplying tiles to pop number bubbles. This interactive game fosters a creative and explorative mindset towards mathematics, making learning fun and engaging in a vibrant underwater world.

**Highlights:** Add, count, and multiply tiles, Pop number bubbles, Collect over 90 unique fish, Learn math creatively, Develop problem-solving skills, Hands-on play experience

**In-app purchases:** none

**What reviewers like**

- 👍 Great for learning math
- 👍 Interactive and fun
- 👍 Engaging for children
- 👍 Motivates learning
- 👍 Good for practicing numbers

**What reviewers complain about**

- 🐛 Repetitive gameplay
- 🐛 Gets boring quickly
- 🐛 Confusing for younger kids
- 🐛 Expensive hardware needed
- 🐛 Inconsistent tile recognition

**Reported bugs**

- Apps not loading
- Never-ending loading screen
- App crashes
- Cannot access camera
- Doesn't recognize tiles properly

**Requested features**

- Add more levels
- Include verbal number prompts
- Simpler starting point for younger kids
- More varied gameplay types
- Add an exit button for games


## Frequently asked questions

### Is Engineering Adventures free?

Engineering Adventures is free to download, with no in-app purchases.

### Is Osmo Numbers Classic free?

Osmo Numbers Classic is free to download, with no in-app purchases.

### Which has better reviews, Engineering Adventures or Osmo Numbers Classic?

Osmo Numbers Classic is rated higher. Engineering Adventures averages 3.7 out of 5 from 3 ratings, while Osmo Numbers Classic averages 4.0 from 264 ratings.

### Do Engineering Adventures or Osmo Numbers Classic have ads?

Neither Engineering Adventures nor Osmo Numbers Classic shows ads.

### Which is updated more often, Engineering Adventures or Osmo Numbers Classic?

Engineering Adventures ships an update every 7 months, and Osmo Numbers Classic every 2 months. Most recently, Engineering Adventures was updated on November 11, 2026 and Osmo Numbers Classic on November 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*