# Sudoku + Auto vs Killer Sudoku

The clearest difference is in-app purchases: Killer Sudoku at none against Sudoku + Auto's 9. Killer Sudoku also leads on ads (none vs shown) and update cadence (fortnightly vs every 5 weeks). Sudoku + Auto's advantage is iOS requirement (13.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Sudoku + Auto sells 6 one-off in-app purchases. Killer Sudoku asks for nothing beyond the download.

Sudoku + Auto ships an update every 5 weeks, Killer Sudoku fortnightly. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Sudoku + Auto | Killer Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (61 ratings)](https://appshunter.io/ios/app/sudoku-plus-auto-note/id6443801474/reviews)** | — |
| Number of ratings | **61** | — |
| Positive reviews | 84.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Funnerware](https://appshunter.io/developer/674121296) | [Dmitrii Kurbakov](https://appshunter.io/developer/6796452758) |

## What reviewers say

### Sudoku + Auto

[App page](https://appshunter.io/ios/app/sudoku-plus-auto-note/id6443801474)

This classic number puzzle game offers thousands of puzzles with adjustable difficulty levels. It features an innovative Auto-Note function that automatically fills in potential numbers, allowing players to focus on solving. Enjoy daily challenges, special events, and progress through increasingly difficult levels.

**Highlights:** Automatic note-taking, Thousands of puzzles, Multiple difficulty levels, Daily challenges, Special themed events, Instructional hints, Customizable palettes

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Puzzle Levels | $1.99 | one-time |
| All Puzzle Levels | $2.99 | one-time |
| Ad Removal | $3.99 | one-time |
| All Puzzle Levels | $3.99 | one-time |
| Premium Combo | $4.99 | one-time |
| Premium Combo | $5.99 | one-time |


### Killer Sudoku

[App page](https://appshunter.io/ios/app/killer-sudoku-quick-notes/id6797194087)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku + Auto free?

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

### Is Killer Sudoku free?

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

### Do Sudoku + Auto or Killer Sudoku have ads?

Sudoku + Auto shows ads; Killer Sudoku does not.

### Which is updated more often, Sudoku + Auto or Killer Sudoku?

Sudoku + Auto ships an update every 5 weeks, and Killer Sudoku fortnightly. Most recently, Sudoku + Auto was updated on October 16, 2026 and Killer Sudoku on October 4, 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.*