# PlaySudoku.io vs Notehead

The clearest difference is update cadence: Notehead at fortnightly against PlaySudoku.io's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PlaySudoku.io ships an update monthly, Notehead fortnightly. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PlaySudoku.io | Notehead |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/playsudokuio/id6738934774/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 1 MB | 29 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alfredo Perry](https://appshunter.io/developer/1782998664) | [AMYNEBO SP Z O O](https://appshunter.io/developer/1792227885) |

## What reviewers say

### PlaySudoku.io

[App page](https://appshunter.io/ios/app/playsudokuio/id6738934774)

Engage your mind with a classic Sudoku experience featuring customizable interfaces and multiple difficulty levels. This game offers auto-save and candidate number support for strategic play, perfect for daily mental exercise or quick gaming sessions.

**Highlights:** Three difficulty levels, Auto-save functionality, Candidate number support, Customizable interface, Intuitive controls, Built-in timer, Offline play

**Features:** macOS Compatibility

**In-app purchases:** none


### Notehead

[App page](https://appshunter.io/ios/app/notehead/id6740919745)

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

**In-app purchases:** none


## Frequently asked questions

### Is PlaySudoku.io free?

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

### Is Notehead free?

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

### Do PlaySudoku.io or Notehead have ads?

Neither PlaySudoku.io nor Notehead shows ads.

### Which is updated more often, PlaySudoku.io or Notehead?

PlaySudoku.io ships an update monthly, and Notehead fortnightly. Most recently, PlaySudoku.io was updated on October 6, 2026 and Notehead on October 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.*