# Merge Unicorn vs Slime Evolution 2

The clearest difference is ads: Merge Unicorn at none against Slime Evolution 2's shown. Merge Unicorn also leads on update cadence (every 2 days vs every 9 days) and ratings volume (335 vs 14). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Merge Unicorn sells 3 one-off in-app purchases and Slime Evolution 2 sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Merge Unicorn holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Merge Unicorn has 335 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 77% of Merge Unicorn's written reviews are positive against 73% of Slime Evolution 2's.

Merge Unicorn ships an update every 2 days, Slime Evolution 2 every 9 days. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Merge Unicorn | Slime Evolution 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (335 ratings)](https://appshunter.io/ios/app/merge-unicorn-idle-evolution/id1437568273/reviews)** | [4.4 (14 ratings)](https://appshunter.io/ios/app/slime-evolution-2/id6630381726/reviews) |
| Number of ratings | **335** | 14 |
| Positive reviews | **76.7% of reviews** | 72.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 232 MB | 127 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Evolution Games GmbH](https://appshunter.io/developer/1183768323) | [SeHyeon Im](https://appshunter.io/developer/1294084939) |

## What reviewers say

### Merge Unicorn

[App page](https://appshunter.io/ios/app/merge-unicorn-idle-evolution/id1437568273)

Merge identical unicorns to discover new, cuter evolutions. Earn coins while idle, tap to speed up, and invest wisely to grow your collection across continents and galaxies. Discover all 30 unique unicorn forms and unlock different game endings.

**Highlights:** Merge identical unicorns, Discover new evolutions, Idle coin earning, Tap to earn coins, Invest in gold income, Collect 30 unicorn forms, Offline play

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Bundle | $1.99 | one-time |
| Gamer Bundle | $4.99 | one-time |
| Master Bundle | $14.99 | one-time |

**What reviewers like**

- 🤩 Highly addictive gameplay
- 🦄 Cute and lovable unicorns
- 💖 Fun and enjoyable experience
- 😌 Relaxing and stress-relieving
- 🆓 Free to play

**What reviewers complain about**

- 👎 Old versions were better
- 💰 Frequent monetization prompts
- 📉 Progress loss at higher levels
- 🧩 Merging issues and glitches
- 🚫 Lack of sell button

**Reported bugs**

- Cannot merge items when having one of everything
- Level 21 locks up constantly
- Logo is squished on bundle pop-ups
- Drag and merge actions go to the wrong spot
- Upgrade says max level when it's not

**Requested features**

- Add a sell button for items
- Improve merging mechanics to prevent items going to wrong spots
- Fix issues with level 21 and higher progression
- Restore lost progress and purchases
- Improve detail in bundle pop-ups


### Slime Evolution 2

[App page](https://appshunter.io/ios/app/slime-evolution-2/id6630381726)

Raise and evolve unique slimes on your own farm. Merge slimes to discover new varieties, choose their elemental types, and battle to earn rewards. Explore a vibrant world filled with hidden slimes and humorous descriptions.

**Highlights:** Create and merge new slime varieties, Choose elemental types (water, fire, grass), Engage in slime battles for rewards, Explore a slime world with unique descriptions, Hunt for hidden and special slimes

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GEM 20 | $0.99 | one-time |
| NEWBIE PACKAGE | $3.99 | one-time |
| GEM 120 | $4.99 | one-time |
| AD REMOVAL PACKAGE | $14.99 | one-time |
| SLIMEBOX PACKAGE | $17.99 | one-time |
| GEM 600 | $19.99 | one-time |
| GEM 2000 | $39.99 | one-time |
| LUXURY PACKAGE | $44.99 | one-time |


## Frequently asked questions

### Is Merge Unicorn free?

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

### Is Slime Evolution 2 free?

Slime Evolution 2 is free to download, with in-app purchases available.

### Which has better reviews, Merge Unicorn or Slime Evolution 2?

Merge Unicorn is rated higher. Merge Unicorn averages 4.6 out of 5 from 335 ratings, while Slime Evolution 2 averages 4.4 from 14 ratings.

### Do Merge Unicorn or Slime Evolution 2 have ads?

Slime Evolution 2 shows ads; Merge Unicorn does not.

### Which is updated more often, Merge Unicorn or Slime Evolution 2?

Merge Unicorn ships an update every 2 days, and Slime Evolution 2 every 9 days. Most recently, Merge Unicorn was updated on October 17, 2026 and Slime Evolution 2 on October 4, 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.*