# Sudoku vs dead air

The clearest difference is ads: dead air at none against Sudoku's shown. dead air also leads on update cadence (daily vs every 3 months) and review sentiment (100% vs 72%). Sudoku's advantage is ratings volume (220 vs 1). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

dead air holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Sudoku has 220 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 72% of Sudoku's written reviews are positive against 100% of dead air's.

Sudoku ships an update every 3 months, dead air daily. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Sudoku | dead air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (220 ratings)](https://appshunter.io/ios/app/sudoku-logic-puzzle-workshop/id1031502396/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dead-air-learn-morse-code/id6804320665/reviews)** |
| Number of ratings | **220** | 1 |
| Positive reviews | 72.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 58 MB | 92 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Volcano Entertainment Limited](https://appshunter.io/developer/1458755045) | [digital gangster enterprises, llc](https://appshunter.io/developer/6794616954) |

## What reviewers say

### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-logic-puzzle-workshop/id1031502396)

Engage your mind with a vast collection of classic and innovative Sudoku puzzles. Master solving techniques with an exclusive hint system, track your progress with detailed statistics, and compete globally. Enjoy multiple variations and a custom puzzle builder for endless logic challenges.

**Highlights:** 15,000+ free Sudoku puzzles, 10 unique Sudoku variations, Exclusive step-by-step hint system, Custom puzzle builder, Global player competitions, Detailed career statistics, Ad-free premium option

**Features:** macOS Compatibility

**In-app purchases:** none


### dead air

[App page](https://appshunter.io/ios/app/dead-air-learn-morse-code/id6804320665)

Learn Morse code through interactive drills and a unique combat game. Master sending and copying characters with adjustable speed and pitch. Progress through lessons and unlock achievements in this offline, ad-free experience.

**Highlights:** Morse code drills using the Koch method, Sending and copying skill practice, Combat-themed game progression, Adjustable speed (5-25 WPM) and pitch, Endless practice mode, 58 achievements, In-app field manual

**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 dead air free?

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

### Which has better reviews, Sudoku or dead air?

dead air is rated higher. Sudoku averages 4.6 out of 5 from 220 ratings, while dead air averages 5.0 from 1 ratings.

### Do Sudoku or dead air have ads?

Sudoku shows ads; dead air does not.

### Which is updated more often, Sudoku or dead air?

Sudoku ships an update every 3 months, and dead air daily. Most recently, Sudoku was updated on October 12, 2026 and dead air on October 5, 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.*