# Cryptex vs Sudoku Extreme Hard Puzzles

The clearest difference is rating: Sudoku Extreme Hard Puzzles at 4.5 against Cryptex's 4.0. Sudoku Extreme Hard Puzzles also leads on ads (none vs shown) and ratings volume (827 vs 1). Cryptex's advantage is in-app purchases (none vs 1). On price, device support and iOS requirement there is nothing between them.

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

Sudoku Extreme Hard Puzzles holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Sudoku Extreme Hard Puzzles has 827 ratings behind it against 1, so its average is the more settled of the two.

Cryptex ships an update every 10 days, Sudoku Extreme Hard Puzzles every 5 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Cryptex | Sudoku Extreme Hard Puzzles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/cryptex-mastermind-classic/id1267775667/reviews) | **[4.5 (827 ratings)](https://appshunter.io/ios/app/sudoku-extreme-hard-puzzles/id1451683705/reviews)** |
| Number of ratings | 1 | **827** |
| Positive reviews | — | 64.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 29 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Abdullah Alioski](https://appshunter.io/developer/1209989580) | [Pranoy Chowdhury](https://appshunter.io/developer/952263202) |

## What reviewers say

### Cryptex

[App page](https://appshunter.io/ios/app/cryptex-mastermind-classic/id1267775667)

A single-player code-breaking game inspired by classic board games. Guess a random combination of letters as quickly as possible using feedback on correct letters and their positions. Enjoy simple, fun, and addictive logic puzzles.

**Highlights:** Single-player code-breaking, Random code generation, Adjustable code length (4-6 letters), Feedback on correct letters, Feedback on correct letter positions, Classic board game inspiration

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

**In-app purchases:** none


### Sudoku Extreme Hard Puzzles

[App page](https://appshunter.io/ios/app/sudoku-extreme-hard-puzzles/id1451683705)

Engage your mind with classic Sudoku puzzles designed for all skill levels. Enjoy a customizable, ad-free experience with various themes and difficulty settings. Track your progress and stats while sharpening your logic skills.

**Highlights:** Multiple difficulty levels, Customizable themes and settings, Notes and hint features, Haptic feedback, Undo, delete, and redo functions, Detailed game statistics and progress graphs, Quick fill and auto-fill options

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sudoku Extreme Premium | $9.99 | one-time |

**What reviewers like**

- 🚀 Smooth gameplay
- 👍 Customizable themes
- 🔒 No data tracking
- 💡 Detailed statistics and graphs
- 👍 Intuitive user interface

**What reviewers complain about**

- 🐛 Difficulty levels not properly calibrated
- 🐛 Accidental number input issues
- 💰 Paywall for basic settings
- 🐛 Inconsistent difficulty across puzzles

**Reported bugs**

- Scoring system inconsistencies at higher levels
- Animation issues causing delays in rapid input

**Requested features**

- Option to disable auto-fill notes
- Ability to resume unfinished games
- Coloring and advanced note-taking tools
- Sync progress across devices
- Difficulty level selector before starting a game


## Frequently asked questions

### Is Cryptex free?

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

### Is Sudoku Extreme Hard Puzzles free?

Sudoku Extreme Hard Puzzles is free to download, with in-app purchases available.

### Which has better reviews, Cryptex or Sudoku Extreme Hard Puzzles?

Sudoku Extreme Hard Puzzles is rated higher. Cryptex averages 4.0 out of 5 from 1 ratings, while Sudoku Extreme Hard Puzzles averages 4.5 from 827 ratings.

### Do Cryptex or Sudoku Extreme Hard Puzzles have ads?

Cryptex shows ads; Sudoku Extreme Hard Puzzles does not.

### Which is updated more often, Cryptex or Sudoku Extreme Hard Puzzles?

Cryptex ships an update every 10 days, and Sudoku Extreme Hard Puzzles every 5 days. Most recently, Cryptex was updated on November 1, 2026 and Sudoku Extreme Hard Puzzles on November 3, 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.*