# Decodex vs Clear Sudoku 9

The clearest difference is price: Decodex at Free against Clear Sudoku 9's $1.99. Decodex also leads on review sentiment (100% vs 67%) and update cadence (every 2 days vs every 9 days). Clear Sudoku 9's advantage is in-app purchases (none vs 4). On rating, ratings volume, ads and device support there is nothing between them.

Decodex is free to download; Clear Sudoku 9 costs $1.99 up front. Decodex sells 4 one-off in-app purchases. Clear Sudoku 9 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Decodex against 5.0 for Clear Sudoku 9. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews are what separate them: 100% of Decodex's written reviews are positive against 67% of Clear Sudoku 9's.

Decodex ships an update every 2 days, Clear Sudoku 9 every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Decodex | Clear Sudoku 9 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/decodex-cryptogram-game/id6758961298/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/clear-sudoku-9/id6759276385/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 19 MB | 2 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aron Csatlos](https://appshunter.io/developer/1661657865) | [Theano Bertsia](https://appshunter.io/developer/1877475650) |

## What reviewers say

### Decodex

[App page](https://appshunter.io/ios/app/decodex-cryptogram-game/id6758961298)

Engage in a modern take on classic cryptogram puzzles. Decipher quotes and enigma codes across diverse categories. Track your progress, build streaks, and enjoy a new challenge daily.

**Highlights:** 50+ puzzle categories, Daily enigma challenges, Intuitive user interface, Progress tracking and streaks, Substitution cipher gameplay

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Hints - Small Pack | $0.99 | one-time |
| Extra Hints - Big Pack | $1.99 | one-time |
| Decodex Premium | $2.99 | one-time |
| Extra Hints - Ultimate Pack | $4.99 | one-time |


### Clear Sudoku 9

[App page](https://appshunter.io/ios/app/clear-sudoku-9/id6759276385)

This Sudoku app prioritizes clarity with large, bold numbers and a clean interface. Enjoy a comfortable puzzle experience with intuitive controls, adjustable difficulty, and daily challenges. Play offline without ads or accounts.

**Highlights:** Large, bold numbers, Clean, uncluttered board, Simple, intuitive controls, Adjustable difficulty levels, Daily challenges, Progress tracking, Offline play

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decodex free?

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

### Is Clear Sudoku 9 free?

Clear Sudoku 9 costs $1.99, with no in-app purchases.

### Which has better reviews, Decodex or Clear Sudoku 9?

Decodex and Clear Sudoku 9 are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Decodex or Clear Sudoku 9 have ads?

Neither Decodex nor Clear Sudoku 9 shows ads.

### Which is updated more often, Decodex or Clear Sudoku 9?

Decodex ships an update every 2 days, and Clear Sudoku 9 every 9 days. Most recently, Decodex was updated on October 24, 2026 and Clear Sudoku 9 on October 24, 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.*