# Zookeeper World vs Good Sudoku+

The clearest difference is rating: Zookeeper World at 4.7 against Good Sudoku+'s 4.1. Zookeeper World also leads on monetization model (free vs paid) and review sentiment (74% vs 59%). On price, ads, in-app purchases 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.

Zookeeper World holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Zookeeper World has 4.8K ratings behind it against 652, so its average is the more settled of the two. Written reviews point the same way: 74% of Zookeeper World's written reviews are positive against 59% of Good Sudoku+'s.

Zookeeper World ships an update every 3 weeks, Good Sudoku+ every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Zookeeper World | Good Sudoku+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.8K ratings)](https://appshunter.io/ios/app/zookeeper-world/id1370858242/reviews)** | [4.1 (652 ratings)](https://appshunter.io/ios/app/good-sudoku-plus/id1551669399/reviews) |
| Number of ratings | **4.8K** | 652 |
| Positive reviews | **74.2% of reviews** | 58.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 1.1 GB | 164 MB |
| Requires iOS | **13.0** | 13.6 |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KITERETSU INC.](https://appshunter.io/developer/400412887) | [Zach Gage](https://appshunter.io/developer/294263418) |

## What reviewers say

### Zookeeper World

[App page](https://appshunter.io/ios/app/zookeeper-world/id1370858242)

Solve match-3 puzzles to build and customize your unique zoo. Collect coins to acquire animals and decorations, increasing your zoo's appeal. Upgrade animals into unique cosplay versions and defend your zoo from MECHA BOSS attacks to earn gems. Regular updates add new content and events.

**Highlights:** Match-3 puzzle gameplay, Zoo building and customization, Animal collection and upgrades, Cosplay animal transformations, MECHA BOSS challenges, Visitor requests and zoo ranking, Weekend multiplayer events

**Features:** With Apple Arcade, Game Controller support, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Relaxing and enjoyable gameplay
- 🚀 Unlimited retries without time limits
- 💎 No in-app purchases or ads
- 🎨 Cute and charming animal designs
- 🏆 Variety of challenges and events

**What reviewers complain about**

- 🐛 Buggy path editor and camera controls
- ⏱️ Frustratingly long loading times
- 🔋 High battery drain
- 🤔 Difficulty spikes and luck-based puzzles
- 🤖 Intrusive and distracting hint system

**Reported bugs**

- Levels with impossible objectives
- Inconsistent star rewards and scoring
- Freezing and crashes on certain devices

**Requested features**

- Ability to customize zoo layout more freely
- Option to turn off notifications and hints
- Increased inventory and item limit for zoo
- Faster animal upgrade and costume unlocking
- More levels and content updates


### Good Sudoku+

[App page](https://appshunter.io/ios/app/good-sudoku-plus/id1551669399)

This app transforms your device into an AI-powered Sudoku companion. It offers a vast library of high-quality puzzles, intelligent hints, and tools to reduce tedious tasks, making the game more enjoyable and educational for all skill levels.

**Highlights:** AI-powered hint system, Over 70,000 high-quality puzzles, Tools to reduce busywork, 3 standard game modes, 3 daily puzzle modes with leaderboards, 6 difficulty levels, Import and share custom puzzles

**Features:** With Apple Arcade, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent teaching and learning features
- 👍 Intuitive and customizable interface
- 🎨 Gorgeous visual design and themes
- 🧠 Helps improve sudoku skills
- 📚 Vast number of puzzles at various difficulties

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔍 Confusing or unintuitive UI elements
- 💤 Loses progress when switching apps
- 🤔 Hints and techniques not always clear
- 🔢 Accidental button presses (hint, undo)

**Reported bugs**

- Crashes when opening/closing app
- Inconsistent behavior of note-taking tools
- Leaderboard scores not updating properly
- Inability to rotate on certain iPad models
- Disappearing UI elements (back button)

**Requested features**

- Automatic iCloud/cloud sync between devices
- More color theme options
- Ability to disable auto-fill/auto-note features
- Clearer explanations for advanced techniques
- Confirmation prompts for actions like hints


## Frequently asked questions

### Is Zookeeper World free?

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

### Is Good Sudoku+ free?

Good Sudoku+ is free to download, with no in-app purchases.

### Which has better reviews, Zookeeper World or Good Sudoku+?

Zookeeper World is rated higher. Zookeeper World averages 4.7 out of 5 from 4.8K ratings, while Good Sudoku+ averages 4.1 from 652 ratings.

### Do Zookeeper World or Good Sudoku+ have ads?

Neither Zookeeper World nor Good Sudoku+ shows ads.

### Which is updated more often, Zookeeper World or Good Sudoku+?

Zookeeper World ships an update every 3 weeks, and Good Sudoku+ every 2 months. Most recently, Zookeeper World was updated on November 6, 2026 and Good Sudoku+ 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.*