# Pulsar Chess Engine vs ZooDooKu

The clearest difference is price: ZooDooKu at Free against Pulsar Chess Engine's $1.99. ZooDooKu also leads on rating (5.0 vs 4.3) and update cadence (every 3 weeks vs every 2 months). Pulsar Chess Engine's advantage is in-app purchases (none vs 1) and ratings volume (12 vs 1). On ads there is nothing between them.

ZooDooKu is free to download; Pulsar Chess Engine costs $1.99 up front. ZooDooKu sells 1 one-off in-app purchase. Pulsar Chess Engine asks for nothing beyond the download.

ZooDooKu holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Pulsar Chess Engine has 12 ratings behind it against 1, so its average is the more settled of the two.

Pulsar Chess Engine ships an update every 2 months, ZooDooKu every 3 weeks. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Pulsar Chess Engine | ZooDooKu |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.3 (12 ratings)](https://appshunter.io/ios/app/pulsar-chess-engine/id839640447/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zoodooku/id6502709701/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 6 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Adams](https://appshunter.io/developer/743520896) | [Abdullah AlAzemi](https://appshunter.io/developer/437802334) |

## What reviewers say

### Pulsar Chess Engine

[App page](https://appshunter.io/ios/app/pulsar-chess-engine/id839640447)

Play chess and six popular variants with adjustable AI difficulty levels. Review logged games, access master game collections, and utilize Crafty engine analysis for standard chess and Chess960. Offers accessibility features for blind users.

**Highlights:** Plays 7 chess variants, Adjustable AI difficulty levels, Game logging and review, Master game collections, Crafty engine analysis, VoiceOver accessibility

**Features:** Vision Pro support

**In-app purchases:** none


### ZooDooKu

[App page](https://appshunter.io/ios/app/zoodooku/id6502709701)

A puzzle game that offers a twist on the classic Sudoku. It features number-based puzzles along with unique challenges using colors and animals. Test your logic and pattern recognition skills in this engaging brain teaser.

**Highlights:** Number puzzles, Color puzzles, Animal puzzles, Sudoku variations, Logic challenges

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hints | $0.99 | one-time |


## Frequently asked questions

### Is Pulsar Chess Engine free?

Pulsar Chess Engine costs $1.99, with no in-app purchases.

### Is ZooDooKu free?

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

### Which has better reviews, Pulsar Chess Engine or ZooDooKu?

ZooDooKu is rated higher. Pulsar Chess Engine averages 4.3 out of 5 from 12 ratings, while ZooDooKu averages 5.0 from 1 ratings.

### Do Pulsar Chess Engine or ZooDooKu have ads?

Neither Pulsar Chess Engine nor ZooDooKu shows ads.

### Which is updated more often, Pulsar Chess Engine or ZooDooKu?

Pulsar Chess Engine ships an update every 2 months, and ZooDooKu every 3 weeks. Most recently, Pulsar Chess Engine was updated on October 14, 2026 and ZooDooKu on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*