# Cat Simulator vs Kon21

The clearest difference is ads: Kon21 at none against Cat Simulator's shown. Kon21 also leads on update cadence (every 4 days vs every 5 months) and monetization model (free vs free with in-app purchases). Cat Simulator's advantage is ratings volume (12 vs 1) and iOS requirement (15.0 vs 26.2). On price, rating, in-app purchases and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Cat Simulator against 5.0 for Kon21. That said, the two scores are not equally well evidenced: Cat Simulator has 12 ratings behind it against 1, so its average is the more settled of the two.

Cat Simulator ships an update every 5 months, Kon21 every 4 days. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Cat Simulator | Kon21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (12 ratings)](https://appshunter.io/ios/app/cat-simulator-mayhem/id6760468363/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kon21/id6760956783/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 131 MB | 19 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Critters Studio](https://appshunter.io/developer/1843400885) | [RetroApps LLC](https://appshunter.io/developer/1845420719) |

## What reviewers say

### Cat Simulator

[App page](https://appshunter.io/ios/app/cat-simulator-mayhem/id6760468363)

Play as a mischievous cat exploring rooms, interacting with objects, and causing playful chaos. Jump, collect stars, and unlock new areas in this adorable adventure game.

**Highlights:** Play as a mischievous cat, Explore cozy rooms, Interact with objects, Cause playful pranks, Collect stars, Unlock new rooms

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

**In-app purchases:** none


### Kon21

[App page](https://appshunter.io/ios/app/kon21/id6760956783)

Embark on a cosmic adventure to restore balance to chaotic zodiac realms. Battle evolving creatures using a unique blackjack-inspired card system and master the art of 21 to unleash powerful attacks. Explore pixel-crafted worlds with a retro aesthetic.

**Highlights:** Explore living zodiac realms, Conway-powered evolving creatures, Strategic blackjack-inspired combat, Master the art of 21, Retro pixel aesthetic

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cat Simulator free?

Cat Simulator is free to download, with no in-app purchases.

### Is Kon21 free?

Kon21 is free to download, with no in-app purchases.

### Which has better reviews, Cat Simulator or Kon21?

Kon21 is rated higher. Cat Simulator averages 4.9 out of 5 from 12 ratings, while Kon21 averages 5.0 from 1 ratings.

### Do Cat Simulator or Kon21 have ads?

Cat Simulator shows ads; Kon21 does not.

### Which is updated more often, Cat Simulator or Kon21?

Cat Simulator ships an update every 5 months, and Kon21 every 4 days. Most recently, Cat Simulator was updated on October 24, 2026 and Kon21 on October 7, 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.*