# Sudoku vs Spectral

The clearest difference is rating: Spectral at 5.0 against Sudoku's 4.3. Spectral also leads on review sentiment (100% vs 60%) and ads (none vs shown). Sudoku's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (17.0 vs 26.0). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Sudoku sells 2 one-off in-app purchases and Spectral sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Spectral holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 15 and 6 respectively. Written reviews point the same way: 60% of Sudoku's written reviews are positive against 100% of Spectral's.

Sudoku ships an update every 3 weeks, Spectral every 11 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sudoku | Spectral |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (15 ratings)](https://appshunter.io/ios/app/sudoku-color/id6744914148/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/spectral-code-breaker/id6755613596/reviews)** |
| Number of ratings | **15** | 6 |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 7 MB | 27 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nykylo Media LLC](https://appshunter.io/developer/1756660380) | [Red Fury LLC](https://appshunter.io/developer/438106406) |

## What reviewers say

### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-color/id6744914148)

A vibrant twist on the classic logic game, this app uses colors instead of numbers to challenge your mind. Solve puzzles with intuitive design and adjustable difficulty levels. Enjoy endless, beautifully crafted boards offline.

**Highlights:** Color-based Sudoku puzzles, Adjustable difficulty levels, Hint system, Endless puzzles, Offline play support, Clean, user-friendly interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nightmare Pack | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |


### Spectral

[App page](https://appshunter.io/ios/app/spectral-code-breaker/id6755613596)

Crack daily color sequence puzzles in six guesses. Choose from four difficulty sizes, from quick mini-puzzles to challenging max-level sequences. Enjoy unlimited free play or unlock the full archive with a one-time purchase.

**Highlights:** Daily color sequence puzzles, Four difficulty sizes, Wordle-style deduction, Mastermind logic, Streak and stats tracking, Game Center leaderboards, One-time purchase for unlimited play

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlimited | $2.99 | one-time |


## Frequently asked questions

### Is Sudoku free?

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

### Is Spectral free?

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

### Which has better reviews, Sudoku or Spectral?

Spectral is rated higher. Sudoku averages 4.3 out of 5 from 15 ratings, while Spectral averages 5.0 from 6 ratings.

### Do Sudoku or Spectral have ads?

Sudoku shows ads; Spectral does not.

### Which is updated more often, Sudoku or Spectral?

Sudoku ships an update every 3 weeks, and Spectral every 11 days. Most recently, Sudoku was updated on October 24, 2026 and Spectral 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.*