# Sudoku· vs Curtle

The clearest difference is ads: Curtle at none against Sudoku·'s shown. Curtle also leads on update cadence (daily vs every 2 months) and monetization model (free vs ad-supported). Sudoku·'s advantage is ratings volume (17K vs 2) and rating (4.7 vs 4.5). On price, 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.

Sudoku· holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Sudoku· has 17K ratings behind it against 2, so its average is the more settled of the two.

Sudoku· ships an update every 2 months, Curtle daily. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sudoku· | Curtle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (17K ratings)](https://appshunter.io/ios/app/sudoku/id839681682/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/curtle-horror-word-puzzle/id6764323790/reviews) |
| Number of ratings | **17K** | 2 |
| Positive reviews | 65.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Ad-supported | **Free** |
| Size | 42 MB | 24 MB |
| Requires iOS | **13** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Tim O's Studios, LLC](https://appshunter.io/developer/412839685) | [Daniel Albu](https://appshunter.io/developer/1797350328) |

## What reviewers say

### Sudoku·

[App page](https://appshunter.io/ios/app/sudoku/id839681682)

Engage your mind with a classic Sudoku puzzle game. Enjoy a clean interface and multiple difficulty levels. Track your progress and compete with others.

**Highlights:** Daily Challenge, Multiple difficulty levels, Note taking, Hint system, Highlight incorrect values, Individual statistics, Game Center leaderboard

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

**In-app purchases:** none

**What reviewers like**

- ⭐ Excellent sudoku game
- 👍 Easy to use and understand
- 🧠 Helps exercise the brain
- 💤 Relaxing and calming

**What reviewers complain about**

- 🙄 Excessive ads and interruptions
- ⏱️ Ads affect game timer
- 🔇 Cannot mute or control audio
- 🐛 Bugs and crashes

**Reported bugs**

- Game freezes or crashes after updates
- Timer issues due to ads
- Difficulty closing ads or navigating UI
- Incompatibility with newer devices

**Requested features**

- Option to pay for ad-free version
- Ability to pause and restart games
- More detailed performance tracking
- Customizable color themes


### Curtle

[App page](https://appshunter.io/ios/app/curtle-horror-word-puzzle/id6764323790)

A daily word-guessing game with a horror theme. Solve a new 6-letter puzzle each day using color-coded clues to identify correct letters and their positions. Track your progress, maintain your streak, and share your achievements with friends.

**Highlights:** Daily 6-letter word puzzles, Color-coded clue system, Stats tracking and win streaks, Shareable results, Daily reminder notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku· free?

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

### Is Curtle free?

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

### Which has better reviews, Sudoku· or Curtle?

Sudoku· is rated higher. Sudoku· averages 4.7 out of 5 from 17K ratings, while Curtle averages 4.5 from 2 ratings.

### Do Sudoku· or Curtle have ads?

Sudoku· shows ads; Curtle does not.

### Which is updated more often, Sudoku· or Curtle?

Sudoku· ships an update every 2 months, and Curtle daily. Most recently, Sudoku· was updated on November 9, 2026 and Curtle on October 31, 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.*