# Osmo Math Buzz vs Thames & Kosmos Junior

The clearest difference is review sentiment: Thames & Kosmos Junior at 100% against Osmo Math Buzz's 13%. Thames & Kosmos Junior also leads on rating (4.9 vs 3.0) and in-app purchases (none vs 2). Osmo Math Buzz's advantage is ratings volume (143 vs 23). On price, ads and device support there is nothing between them.

Both are free to download. Osmo Math Buzz sells 2 one-off in-app purchases. Thames & Kosmos Junior asks for nothing beyond the download.

Thames & Kosmos Junior holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Osmo Math Buzz has 143 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 13% of Osmo Math Buzz's written reviews are positive against 100% of Thames & Kosmos Junior's.

## The numbers

| Metric | Osmo Math Buzz | Thames & Kosmos Junior |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (143 ratings)](https://appshunter.io/ios/app/osmo-math-buzz/id1504177111/reviews) | **[4.9 (23 ratings)](https://appshunter.io/ios/app/thames-and-kosmos-junior/id6497407881/reviews)** |
| Number of ratings | **143** | 23 |
| Positive reviews | 13.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 264 MB | 31 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tangible Play](https://appshunter.io/developer/799157444) | [Franckh-Kosmos Verlags GmbH & Co. KG](https://appshunter.io/developer/375309682) |

## What reviewers say

### Osmo Math Buzz

[App page](https://appshunter.io/ios/app/osmo-math-buzz/id1504177111)

Engage in collaborative math practice with up to four players, solving equations to overcome challenges and collect rewards. Designed for children aged 6-10, this app transforms screen time into hands-on learning through interactive play.

**Highlights:** Team-based math practice, Addition, subtraction, multiplication, Collaborative play, Hands-on learning system, Ages 6-10, Tangible play with digital learning

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day trial of Math Buzz | Free | one-time |
| Unlock Math Buzz | $24.99 | one-time |

**What reviewers like**

- 👍 Fun and engaging gameplay
- 💡 Teaches numbers and strategy
- 🤝 Good for multiplayer
- 💰 Nice price (for some)
- 🧠 Challenges children

**What reviewers complain about**

- 🐛 Freezes on startup
- 🐛 App won't load
- 🐛 Crashes mid-game
- 🐛 Progress lost on crash
- 🐛 Unreliable login

**Reported bugs**

- App freezes on Osmo logo
- App does not load
- App crashes during gameplay
- Lost progress after crashes
- Login issues and purchase restoration problems

**Requested features**

- Fix the app loading issue
- Improve app stability
- Make the game more engaging
- Provide clearer instructions
- Ensure progress is saved


### Thames & Kosmos Junior

[App page](https://appshunter.io/ios/app/thames-and-kosmos-junior/id6497407881)

Build and program a robotic friend using a physical kit. Control its movements, lights, and sounds through an intuitive visual coding interface. This app offers a fun, hands-on introduction to robotics, engineering, and computer science for young learners.

**Highlights:** Build and code a robotic buddy, Learn coding with block-based interface, Program movement, lights, and sounds, Remote control and programming modes, Robot workshop diagnostic game

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

**In-app purchases:** none


## Frequently asked questions

### Is Osmo Math Buzz free?

Osmo Math Buzz is free to download, with in-app purchases available.

### Is Thames & Kosmos Junior free?

Thames & Kosmos Junior is free to download, with no in-app purchases.

### Which has better reviews, Osmo Math Buzz or Thames & Kosmos Junior?

Thames & Kosmos Junior is rated higher. Osmo Math Buzz averages 3.0 out of 5 from 143 ratings, while Thames & Kosmos Junior averages 4.9 from 23 ratings.

### Do Osmo Math Buzz or Thames & Kosmos Junior have ads?

Neither Osmo Math Buzz nor Thames & Kosmos Junior shows ads.

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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.*