# Microsoft Sudoku vs SUM

The clearest difference is ads: SUM at none against Microsoft Sudoku's shown. SUM also leads on update cadence (every 3 days vs every 2 months). Microsoft Sudoku's advantage is iOS requirement (12.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Microsoft Sudoku sells 2 in-app purchases, starting at $1.99 per month and SUM sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Microsoft Sudoku ships an update every 2 months, SUM every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Microsoft Sudoku | SUM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7.5K ratings)](https://appshunter.io/ios/app/microsoft-sudoku/id1462494195/reviews)** | — |
| Number of ratings | **7.5K** | — |
| Positive reviews | 37.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 153 MB | 110 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Microsoft Corporation](https://appshunter.io/developer/298856275) | [Alex van Rooijen](https://appshunter.io/developer/1874390384) |

## What reviewers say

### Microsoft Sudoku

[App page](https://appshunter.io/ios/app/microsoft-sudoku/id1462494195)

Enjoy classic and unique Sudoku puzzles with adjustable difficulty. Engage in daily challenges, track your progress, and customize your gameplay with various themes and settings. An optional premium subscription removes ads and unlocks past challenges.

**Highlights:** Classic and Irregular Sudoku modes, 6 difficulty levels, Daily Challenges with badges, Multiple themes and symbol options, Note-taking and mistake erasing, Cloud save and Xbox Live achievements, Progress tracking and statistics

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Subscription | $1.99 | per month |
| Premium Yearly Subscription | $9.99 | per year |

**What reviewers like**

- 🚀 Intuitive and fast gameplay
- 🔒 Robust security features
- 👍 Variety of puzzle types
- 👍 Customizable options
- 👍 Great for beginners and experts

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- 🔋 Ads play audio even in silent mode
- 🔋 Excessive ads and intrusive monetization
- 🐛 Progress not saving properly
- 🐛 Compatibility issues on certain devices

**Reported bugs**

- Daily challenge progress not syncing across devices
- Levels and scores resetting unexpectedly
- App getting stuck on loading screens
- Ads hijacking device controls and interrupting background audio

**Requested features**

- Landscape mode support for tablets
- More customization options for notes and highlighting
- Ability to replay past daily challenges
- Improved undo/redo functionality
- Autofill or auto-complete options for advanced players


### SUM

[App page](https://appshunter.io/ios/app/sum-quiet-math-puzzles/id6804407416)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SUM Premium | $3.99 | one-time |


## Frequently asked questions

### Is Microsoft Sudoku free?

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

### Is SUM free?

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

### Do Microsoft Sudoku or SUM have ads?

Microsoft Sudoku shows ads; SUM does not.

### Which is updated more often, Microsoft Sudoku or SUM?

Microsoft Sudoku ships an update every 2 months, and SUM every 3 days. Most recently, Microsoft Sudoku was updated on October 25, 2026 and SUM on October 24, 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.*