# One Sudoku vs Math Fast Calculation Game

The clearest difference is in-app purchases: Math Fast Calculation Game at none against One Sudoku's 3. Math Fast Calculation Game also leads on update cadence (daily vs every 3 months) and iOS requirement (12.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. One Sudoku sells 3 in-app purchases, starting at $2.49 per month. Math Fast Calculation Game asks for nothing beyond the download.

One Sudoku ships an update every 3 months, Math Fast Calculation Game daily. Both last shipped on October 8, 2026.

## The numbers

| Metric | One Sudoku | Math Fast Calculation Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/one-sudoku/id1495962031/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 43 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cornelius Behrend](https://appshunter.io/developer/680700119) | [Ivan Rancic](https://appshunter.io/developer/1560879460) |

## What reviewers say

### One Sudoku

[App page](https://appshunter.io/ios/app/one-sudoku/id1495962031)

This app offers a vast collection of Sudoku puzzles with 11 unique types and adjustable difficulty. Engage in special events, compare scores globally, and unlock achievements. A premium club membership provides offline play and access to all puzzle variations without ads.

**Highlights:** 11 Sudoku puzzle types, Selectable difficulty levels, Special themed events, Global player comparisons, Unlockable achievements, Offline play with club membership

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Sudoku Club: Monthly | $2.49 | per month |
| One Sudoku Club Promotion | $6.99 | per 3 months |
| One Sudoku Club: Yearly | $22.99 | per year |


### Math Fast Calculation Game

[App page](https://appshunter.io/ios/app/math-fast-calculation-game/id6748619782)

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

**In-app purchases:** none


## Frequently asked questions

### Is One Sudoku free?

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

### Is Math Fast Calculation Game free?

Math Fast Calculation Game is free to download, with no in-app purchases.

### Do One Sudoku or Math Fast Calculation Game have ads?

Both One Sudoku and Math Fast Calculation Game show ads.

### Which is updated more often, One Sudoku or Math Fast Calculation Game?

One Sudoku ships an update every 3 months, and Math Fast Calculation Game daily. Most recently, One Sudoku was updated on October 8, 2026 and Math Fast Calculation Game on October 8, 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.*