# Sloth Evolution vs Merge Unicorn

The clearest difference is ads: Merge Unicorn at none against Sloth Evolution's shown. Merge Unicorn also leads on update cadence (every 2 days vs every 6 weeks) and iOS requirement (8.0 vs 15.0). Sloth Evolution's advantage is review sentiment (92% vs 77%). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Sloth Evolution sells 15 one-off in-app purchases and Merge Unicorn sells 3 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 Sloth Evolution against 4.6 for Merge Unicorn. Both are backed by a comparable volume of ratings — 142 and 338 respectively. Written reviews are what separate them: 92% of Sloth Evolution's written reviews are positive against 77% of Merge Unicorn's.

Sloth Evolution ships an update every 6 weeks, Merge Unicorn every 2 days. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sloth Evolution | Merge Unicorn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (142 ratings)](https://appshunter.io/ios/app/sloth-evolution-merge-game/id1304363501/reviews)** | [4.6 (338 ratings)](https://appshunter.io/ios/app/merge-unicorn-idle-evolution/id1437568273/reviews) |
| Number of ratings | 142 | **338** |
| Positive reviews | **91.7% of reviews** | 76.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 156 MB | 232 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TPG TECNOLOGIA DA INFORMACAO LTDA](https://appshunter.io/developer/444343830) | [Evolution Games GmbH](https://appshunter.io/developer/1183768323) |

## What reviewers say

### Sloth Evolution

[App page](https://appshunter.io/ios/app/sloth-evolution-merge-game/id1304363501)

Combine mutant sloth species to discover new breeds and unlock their hidden potential. This idle evolution game features a unique story, doodle-like illustrations, and open-ended gameplay.

**Highlights:** Combine mutant sloth species, Discover new sloth breeds, Unlock hidden potential, Idle clicker gameplay, Unique story with twists, Doodle-like illustrations

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alien Currency Pack 1 | $1.99 | one-time |
| Hard Currency Pack Offer | $1.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Hard Currency Pack 1 | $1.99 | one-time |
| Promo Bundles Very High | $2.99 | one-time |
| Shop Bundle 1 | $2.99 | one-time |
| Hard Currency Pack 2 | $4.99 | one-time |
| Alien Currency Pack 2 | $5.99 | one-time |
| Shop Bundle 2 | $5.99 | one-time |
| Promo Bundles High | $5.99 | one-time |
| Trinket | $6.99 | one-time |
| Hard Currency Pack 3 | $9.99 | one-time |
| Starter Bundle Discount | $9.99 | one-time |
| Promo Bundles Full | $11.99 | one-time |
| Hard Currency Pack 4 | $19.99 | one-time |


### 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


## Frequently asked questions

### Is Sloth Evolution free?

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

### Is Merge Unicorn free?

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

### Which has better reviews, Sloth Evolution or Merge Unicorn?

Sloth Evolution is rated higher. Sloth Evolution averages 4.8 out of 5 from 142 ratings, while Merge Unicorn averages 4.6 from 338 ratings.

### Do Sloth Evolution or Merge Unicorn have ads?

Sloth Evolution shows ads; Merge Unicorn does not.

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

Sloth Evolution ships an update every 6 weeks, and Merge Unicorn every 2 days. Most recently, Sloth Evolution was updated on October 22, 2026 and Merge Unicorn on October 21, 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.*