# Slime Evolution vs RainCat

The clearest difference is in-app purchases: RainCat at none against Slime Evolution's 4. RainCat also leads on ads (none vs shown) and rating (5.0 vs 4.8). Slime Evolution's advantage is update cadence (every 2 months vs every 17 months) and ratings volume (597 vs 6). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Slime Evolution sells 4 one-off in-app purchases. RainCat asks for nothing beyond the download.

RainCat holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Slime Evolution has 597 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 91% of Slime Evolution's written reviews are positive against 100% of RainCat's.

Slime Evolution ships an update every 2 months, RainCat every 17 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Slime Evolution | RainCat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (597 ratings)](https://appshunter.io/ios/app/slime-evolution-raise-slimes/id1131103968/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/raincat/id1152624676/reviews)** |
| Number of ratings | **597** | 6 |
| Positive reviews | 91.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 17 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 111 MB | 40 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SeHyeon Im](https://appshunter.io/developer/1294084939) | [thirteen23](https://appshunter.io/developer/448722332) |

## 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


### RainCat

[App page](https://appshunter.io/ios/app/raincat/id1152624676)

Guide a cat through the rain, using an umbrella to protect it from the elements and collect food. Compete for high scores and enjoy a local multiplayer mode inspired by air hockey.

**Highlights:** Protect cat from rain, Collect food, Achieve high scores, Local multiplayer mode, Air hockey style gameplay

**In-app purchases:** none


## Frequently asked questions

### Is Slime Evolution free?

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

### Is RainCat free?

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

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

RainCat is rated higher. Slime Evolution averages 4.8 out of 5 from 597 ratings, while RainCat averages 5.0 from 6 ratings.

### Do Slime Evolution or RainCat have ads?

Slime Evolution shows ads; RainCat does not.

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

Slime Evolution ships an update every 2 months, and RainCat every 17 months. Most recently, Slime Evolution was updated on October 22, 2026 and RainCat on October 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.*