# Slime Evolution vs Unicorn Evolution Simulator

The clearest difference is ratings volume: Unicorn Evolution Simulator at 5.5K against Slime Evolution's 596. Slime Evolution's advantage is iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Slime Evolution sells 4 one-off in-app purchases and Unicorn Evolution Simulator sells 14 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 Slime Evolution against 4.8 for Unicorn Evolution Simulator. That said, the two scores are not equally well evidenced: Unicorn Evolution Simulator has 5.5K ratings behind it against 596, so its average is the more settled of the two. Written reviews split almost evenly too, at 92% and 91% positive.

Slime Evolution ships an update every 2 months, Unicorn Evolution Simulator every 5 weeks. Both last shipped on September 24, 2026.

## The numbers

| Metric | Slime Evolution | Unicorn Evolution Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (596 ratings)](https://appshunter.io/ios/app/slime-evolution-raise-slimes/id1131103968/reviews) | [4.8 (5.5K ratings)](https://appshunter.io/ios/app/unicorn-evolution-simulator/id1215026315/reviews) |
| Number of ratings | 596 | **5.5K** |
| Positive reviews | **91.5% of reviews** | 91.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 111 MB | 152 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SeHyeon Im](https://appshunter.io/developer/1294084939) | [TPG TECNOLOGIA DA INFORMACAO LTDA](https://appshunter.io/developer/444343830) |

## What reviewers say

### 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


### Unicorn Evolution Simulator

[App page](https://appshunter.io/ios/app/unicorn-evolution-simulator/id1215026315)

Combine magical creatures to discover their most curious and bizarre forms. Explore different stages and species in this incremental clicker game with a mythical twist. Uncover a mind-blowing story and find your destiny with various possible endings.

**Highlights:** Combine unicorns to evolve, Discover new species and forms, Incremental clicker gameplay, Mythical evolution theme, Multiple possible endings, Doodle-like illustrations

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| instant coins doubler | $1.99 | one-time |
| Hard Currency Pack 1 | $1.99 | one-time |
| pack with diamonds | $1.99 | one-time |
| pack of rubies | $2.99 | one-time |
| Promo Bundles Very High | $2.99 | one-time |
| Shop Bundle | $2.99 | one-time |
| Hard Currency Pack 2 | $3.99 | one-time |
| big pack of rubies | $4.99 | one-time |
| income doubler | $5.99 | one-time |
| Hard Currency Pack 3 | $6.99 | one-time |
| Trinket | $6.99 | one-time |
| starter bundle discount | $9.99 | one-time |
| Hard Currency Pack 4 | $14.99 | one-time |

**What reviewers like**

- 🦄 Cute and fun unicorn game
- 🕹 Addictive and engaging gameplay
- 💎 Customization options for unicorns
- 🎨 Vibrant and colorful art style
- 🕰 Good time-waster for when bored

**What reviewers complain about**

- 🔍 Difficulty finding specific unicorns
- ⏱ Slow progression and long wait times
- 📺 Excessive and intrusive advertisements
- 🤔 Lack of explanation for certain game mechanics
- 🔋 High battery consumption

**Reported bugs**

- Freezing or crashing issues
- Hats/colors not properly applied to unicorns
- Glitches with alien/space world mechanics
- Inconsistent or missing sound effects

**Requested features**

- More variety of unicorn types and combinations
- Ability to save progress and sync across devices
- Option to disable or reduce advertisements
- Faster crate/unicorn generation
- Confirmation prompts before making purchases


## Frequently asked questions

### Is Slime Evolution free?

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

### Is Unicorn Evolution Simulator free?

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

### Which has better reviews, Slime Evolution or Unicorn Evolution Simulator?

Slime Evolution and Unicorn Evolution Simulator are both rated 4.8 out of 5 on the App Store, from 596 and 5.5K ratings respectively.

### Do Slime Evolution or Unicorn Evolution Simulator have ads?

Both Slime Evolution and Unicorn Evolution Simulator show ads.

### Which is updated more often, Slime Evolution or Unicorn Evolution Simulator?

Slime Evolution ships an update every 2 months, and Unicorn Evolution Simulator every 5 weeks. Most recently, Slime Evolution was updated on September 24, 2026 and Unicorn Evolution Simulator 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.*