# Kitty Keep™ vs Sudoku Master

The clearest difference is update cadence: Sudoku Master at every 6 days against Kitty Keep™'s fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Kitty Keep™ sells 9 one-off in-app purchases and Sudoku Master sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Kitty Keep™ ships an update fortnightly, Sudoku Master every 6 days. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Kitty Keep™ | Sudoku Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (4.5K ratings)](https://appshunter.io/ios/app/kitty-keep/id6476017989/reviews)** | — |
| Number of ratings | **4.5K** | — |
| Positive reviews | 95.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 366 MB | 51 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Funovus LLC](https://appshunter.io/developer/1474891913) | [Stoyan Dimitrov](https://appshunter.io/developer/1867491313) |

## What reviewers say

### Kitty Keep™

[App page](https://appshunter.io/ios/app/kitty-keep/id6476017989)

Embark on an offline tower defense adventure featuring adorable cat heroes. Strategize to grow your castle and defend against sea creature invaders using unique cat abilities. Enjoy a blend of idle and TD gameplay with auto-battle rewards.

**Highlights:** Offline tower defense gameplay, Cute cat hero units, Castle growth and upgrades, Idle/Auto-battle rewards, Level up unique cat heroes, Defend against sea creatures

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pouch of Potions | $5.99 | one-time |
| Basic Starter Pack | $5.99 | one-time |
| 50 Gems | $5.99 | one-time |
| Event Starter Pack | $5.99 | one-time |
| Event Hero Pack | $5.99 | one-time |
| Event Pass | $9.99 | one-time |
| Secret Lab Bundle | $11.99 | one-time |
| Remove Ads Bundle | $11.99 | one-time |
| Event Premium Pass | $24.99 | one-time |

**What reviewers like**

- 🚀 Fun and addictive gameplay
- 👍 Cute and charming art style
- 🚀 Quick progress and upgrades
- 👍 No forced ads
- 👍 Engaging tower defense mechanics

**What reviewers complain about**

- 🐛 Difficulty spike at higher levels
- 💰 Potential pay-to-progress issues
- 🐛 Repetitive gameplay over time
- 🐛 Occasional crashes or bugs

**Reported bugs**

- Crashes during high-level waves
- Progression roadblocks at certain points
- Inconsistent performance on older devices

**Requested features**

- More cat variety and customization
- Expanded event and challenge modes
- Offline/idle progression features
- Improved level design and enemy variety


### Sudoku Master

[App page](https://appshunter.io/ios/app/sudoku-master-world-tour/id6757727450)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Kitty Keep™ free?

Kitty Keep™ is free to download, with in-app purchases available.

### Is Sudoku Master free?

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

### Do Kitty Keep™ or Sudoku Master have ads?

Both Kitty Keep™ and Sudoku Master show ads.

### Which is updated more often, Kitty Keep™ or Sudoku Master?

Kitty Keep™ ships an update fortnightly, and Sudoku Master every 6 days. Most recently, Kitty Keep™ was updated on November 5, 2026 and Sudoku Master on October 25, 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.*