# Sudoku ′ vs Sudoku

The clearest difference is in-app purchases: Sudoku at none against Sudoku ′'s 1. Sudoku ′'s advantage is update cadence (every 3 months vs every 39 months) and iOS requirement (12.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Sudoku ′ sells 1 one-off in-app purchase. Sudoku asks for nothing beyond the download.

Sudoku ′ ships an update every 3 months, Sudoku every 39 months. The most recent releases landed on November 13, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sudoku ′ | Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (39K ratings)](https://appshunter.io/ios/app/sudoku/id408188960/reviews)** | — |
| Number of ratings | **39K** | — |
| Positive reviews | 81.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 39 months |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 159 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mind The Frog, Inc.](https://appshunter.io/developer/329981779) | [ZIROTEK Corp.](https://appshunter.io/developer/1209821727) |

## What reviewers say

### Sudoku ′

[App page](https://appshunter.io/ios/app/sudoku/id408188960)

Engage with an unlimited supply of Sudoku puzzles, playable online or offline. This app offers six difficulty levels, daily challenges, and a clean, user-friendly interface designed for both novice and expert players. Enjoy a distraction-free experience with customizable settings and essential tools like undo/redo and note-taking.

**Highlights:** Unlimited Sudoku grids, Offline play, 6 difficulty levels, Daily challenges, Undo/Redo functionality, Automatic and manual notes, Conflict and error highlighting

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🧠 Challenging levels
- 🎨 Customizable colors
- 📝 Helpful note-taking feature
- 🔍 Number highlighting

**What reviewers complain about**

- 🔍 Confusing note-taking behavior
- 🔍 Difficulty level jumps
- 🔍 Ads interrupting gameplay
- 🔍 Lack of progress tracking
- 🔍 Unstable on some devices

**Reported bugs**

- Puzzle errors
- App crashes
- Incorrect number placement
- Sideways orientation on tablets

**Requested features**

- Ability to stay in note mode
- More granular difficulty levels
- Mute option for ads
- Progress tracking and statistics
- Improved stability on older devices


### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-infinite-challenges/id1491288551)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku ′ free?

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

### Is Sudoku free?

Sudoku is free to download, with no in-app purchases.

### Do Sudoku ′ or Sudoku have ads?

Both Sudoku ′ and Sudoku show ads.

### Which is updated more often, Sudoku ′ or Sudoku?

Sudoku ′ ships an update every 3 months, and Sudoku every 39 months. Most recently, Sudoku ′ was updated on November 13, 2026 and Sudoku on November 7, 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.*