# Osmo Lettertopia vs Math

The clearest difference is rating: Math at 4.5 against Osmo Lettertopia's 3.3. Math also leads on review sentiment (48% vs 6%) and ratings volume (8K vs 75). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Osmo Lettertopia sells 2 one-off in-app purchases and Math sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Math holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: Math has 8K ratings behind it against 75, so its average is the more settled of the two. Written reviews point the same way: 6% of Osmo Lettertopia's written reviews are positive against 48% of Math's.

Osmo Lettertopia ships an update every 3 months, Math monthly. The most recent releases landed on November 4, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Osmo Lettertopia | Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (75 ratings)](https://appshunter.io/ios/app/osmo-lettertopia/id1504176887/reviews) | **[4.5 (8K ratings)](https://appshunter.io/ios/app/math-teach-monster-numbers/id1507984567/reviews)** |
| Number of ratings | 75 | **8K** |
| Positive reviews | 5.6% of reviews | **47.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 277 MB | 226 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tangible Play](https://appshunter.io/developer/799157444) | [Teach Your Monster](https://appshunter.io/developer/828392049) |

## What reviewers say

### Osmo Lettertopia

[App page](https://appshunter.io/ios/app/osmo-lettertopia/id1504176887)

This app transforms your tablet into a hands-on learning system for children aged 6-10. Players team up to build words, collect magical creatures, and boost spelling and social-emotional skills through collaborative play.

**Highlights:** Team-based word building, Collect magical creatures, Boost spelling skills, Develop social-emotional skills, Hands-on learning system, Collaborative play

**In-app purchases (2)**

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


### Math

[App page](https://appshunter.io/ios/app/math-teach-monster-numbers/id1507984567)

This app offers engaging math learning games for children, focusing on numbers up to 20. It features 15 mini-games with 150 levels designed for progressive learning, covering essential math skills from counting to basic arithmetic. The game adapts to each child's pace and aligns with common core standards.

**Highlights:** 15 captivating mini-games, 150 levels for progressive learning, Covers addition, subtraction, counting, and more, Adapts to child's learning pace, Aligned with common core standards, No ads

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Number Skills: Monthly | $8.99 | per month |
| Number Skills: Yearly | $49.99 | per year |
| Number Skills: Annual | $69.99 | per year |

**What reviewers like**

- 👍 Great learning game
- 🎨 Awesome graphics and characters
- 💡 Engaging and fun for kids

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔒 Login and account issues
- ⏱️ Slow and laggy performance
- 💰 Transitioned from free to paid

**Reported bugs**

- Unable to progress past certain levels
- Sound issues and complete loss of audio
- Login and account problems

**Requested features**

- Add more advanced math levels
- Improve sound and stability
- Allow parents to set starting levels


## Frequently asked questions

### Is Osmo Lettertopia free?

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

### Is Math free?

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

### Which has better reviews, Osmo Lettertopia or Math?

Math is rated higher. Osmo Lettertopia averages 3.3 out of 5 from 75 ratings, while Math averages 4.5 from 8K ratings.

### Do Osmo Lettertopia or Math have ads?

Neither Osmo Lettertopia nor Math shows ads.

### Which is updated more often, Osmo Lettertopia or Math?

Osmo Lettertopia ships an update every 3 months, and Math monthly. Most recently, Osmo Lettertopia was updated on November 4, 2026 and Math on November 7, 2026.

---

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