# Cat Evolution vs Slime Evolution

The clearest difference is update cadence: Cat Evolution at every 10 days against Slime Evolution's every 2 months. Cat Evolution also leads on ratings volume (8.1K vs 596). Slime Evolution's advantage is review sentiment (92% vs 82%) and iOS requirement (13.0 vs 15.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Cat Evolution sells 11 one-off in-app purchases and Slime Evolution sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Cat Evolution against 4.8 for Slime Evolution. That said, the two scores are not equally well evidenced: Cat Evolution has 8.1K ratings behind it against 596, so its average is the more settled of the two. Written reviews are what separate them: 82% of Cat Evolution's written reviews are positive against 92% of Slime Evolution's.

Cat Evolution ships an update every 10 days, Slime Evolution every 2 months. Both last shipped on September 24, 2026.

## The numbers

| Metric | Cat Evolution | Slime Evolution |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (8.1K ratings)](https://appshunter.io/ios/app/cat-evolution-kitty-fusion/id1126539920/reviews) | [4.8 (596 ratings)](https://appshunter.io/ios/app/slime-evolution-raise-slimes/id1131103968/reviews) |
| Number of ratings | **8.1K** | 596 |
| Positive reviews | 81.7% of reviews | **91.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 160 MB | 111 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [TPG TECNOLOGIA DA INFORMACAO LTDA](https://appshunter.io/developer/444343830) | [SeHyeon Im](https://appshunter.io/developer/1294084939) |

## What reviewers say

### Cat Evolution

[App page](https://appshunter.io/ios/app/cat-evolution-kitty-fusion/id1126539920)

Combine cats to evolve them into unique and bizarre forms in this incremental clicker game. Discover new species, collect coins, and unlock various endings. It's a purr-fectly amusing experience for cat lovers.

**Highlights:** Combine cats to evolve, Discover curious and bizarre forms, Collect cat poop coins, Unlock different stages and species, Experience a mind-blowing story, Multiple possible endings

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| pack of rubies | $1.99 | one-time |
| instant coins doubler | $1.99 | one-time |
| pack with some diamonds | $1.99 | one-time |
| pack of diamonds | $1.99 | one-time |
| ads removal | $1.99 | one-time |
| pack with more diamonds | $3.99 | one-time |
| big pack of rubies | $4.99 | one-time |
| income doubler | $5.99 | one-time |
| pack with plenty of diamonds | $6.99 | one-time |
| Trinket | $6.99 | one-time |
| starter bundle with discount | $9.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive game
- 😻 Cute and amusing cat designs
- 🚀 Fast progression and evolution
- 💎 Ability to customize cats with hats

**What reviewers complain about**

- 🙄 Excessive ads that can crash the game
- 🤔 Disappearing cat customizations after restarting
- 🤯 Glitches with berry and tractor functionality

**Reported bugs**

- Game crashes when watching certain ads
- Purchased cats disappearing after crashes
- Berries and tractor not working as expected

**Requested features**

- Ability to save custom cat colors
- Option to disable ads or pay for ad-free version
- Improved crate opening experience (no need to tap individually)


### Slime Evolution

[App page](https://appshunter.io/ios/app/slime-evolution-raise-slimes/id1131103968)

Cultivate a charming slime farm by merging identical slimes to discover new ones. Assign elemental properties like water, fire, or grass to influence their characteristics. Embark on adventures to collect more slimes and treasures, and document your discoveries in a field guide.

**Highlights:** Create new slimes by merging, Assign elemental properties (water, fire, grass), Go on adventures for rewards, Collect slimes in a field guide, Discover unique slime evolution methods

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Gem | $0.99 | one-time |
| 110 Gem | $4.99 | one-time |
| 240 Gem | $9.99 | one-time |
| 1400 Gem | $49.99 | one-time |

**What reviewers like**

- 👍 Cute and relaxing game
- 🎨 Charming art style
- 🕹️ Simple and addictive gameplay
- ⏱️ Good time-killer
- 🌳 Enjoyable exploration and evolution

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 💰 Unbalanced upgrade costs between platforms
- 🔍 Unclear mechanics (e.g. using seeds)
- 🌐 Language/localization issues

**Reported bugs**

- Inability to merge certain slime types
- Disappearing slimes and lost progress
- Ads not working or causing errors

**Requested features**

- Add more types of slimes
- Implement a slime shop/store
- Improve the reward system
- Add more gameplay modes or mini-games
- Enhance the exploration and progression systems


## Frequently asked questions

### Is Cat Evolution free?

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

### Is Slime Evolution free?

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

### Which has better reviews, Cat Evolution or Slime Evolution?

Cat Evolution and Slime Evolution are both rated 4.8 out of 5 on the App Store, from 8.1K and 596 ratings respectively.

### Do Cat Evolution or Slime Evolution have ads?

Both Cat Evolution and Slime Evolution show ads.

### Which is updated more often, Cat Evolution or Slime Evolution?

Cat Evolution ships an update every 10 days, and Slime Evolution every 2 months. Most recently, Cat Evolution was updated on September 24, 2026 and Slime Evolution on September 24, 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.*