# Ο Ξεφτέρης και ο Άι Βασίλης 2 vs Math Ninjas

The clearest difference is price: Math Ninjas at Free against Ο Ξεφτέρης και ο Άι Βασίλης 2's $2.99. Math Ninjas also leads on update cadence (every 7 months vs every 39 months). Ο Ξεφτέρης και ο Άι Βασίλης 2's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Math Ninjas is free to download; Ο Ξεφτέρης και ο Άι Βασίλης 2 costs $2.99 up front. Math Ninjas sells 1 one-off in-app purchase. Ο Ξεφτέρης και ο Άι Βασίλης 2 asks for nothing beyond the download.

Ο Ξεφτέρης και ο Άι Βασίλης 2 ships an update every 39 months, Math Ninjas every 7 months. The most recent releases landed on October 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Ο Ξεφτέρης και ο Άι Βασίλης 2 | Math Ninjas |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[3.5 (6 ratings)](https://appshunter.io/ios/app/math-ninjas/id895508928/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 63.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 7 months** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 198 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SIEM SA](https://appshunter.io/developer/433188957) | [HARASHOW Interactive](https://appshunter.io/developer/356148278) |

## What reviewers say

### Ο Ξεφτέρης και ο Άι Βασίλης 2

[App page](https://appshunter.io/ios/app/2/id478820109)

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

**In-app purchases:** none


### Math Ninjas

[App page](https://appshunter.io/ios/app/math-ninjas/id895508928)

This educational game uses a ninja theme to make learning mathematics fun for children on iPhone and iPad. Kids can engage with math concepts through interactive gameplay.

**Highlights:** Game-based learning, Mathematics education, Ninja theme, Interactive gameplay, iOS compatible

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $3.99 | one-time |


## Frequently asked questions

### Is Ο Ξεφτέρης και ο Άι Βασίλης 2 free?

Ο Ξεφτέρης και ο Άι Βασίλης 2 costs $2.99, with no in-app purchases.

### Is Math Ninjas free?

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

### Do Ο Ξεφτέρης και ο Άι Βασίλης 2 or Math Ninjas have ads?

Neither Ο Ξεφτέρης και ο Άι Βασίλης 2 nor Math Ninjas shows ads.

### Which is updated more often, Ο Ξεφτέρης και ο Άι Βασίλης 2 or Math Ninjas?

Ο Ξεφτέρης και ο Άι Βασίλης 2 ships an update every 39 months, and Math Ninjas every 7 months. Most recently, Ο Ξεφτέρης και ο Άι Βασίλης 2 was updated on October 5, 2026 and Math Ninjas on September 28, 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.*