# Brian vs Slime Evolution

The clearest difference is review sentiment: Slime Evolution at 91% against Brian's 44%. Slime Evolution also leads on rating (4.8 vs 3.8) and ratings volume (597 vs 64). Brian's advantage is ads (none vs shown) and iOS requirement (7.0 vs 13.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Brian sells 5 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.

Slime Evolution holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Slime Evolution has 597 ratings behind it against 64, so its average is the more settled of the two. Written reviews point the same way: 44% of Brian's written reviews are positive against 91% of Slime Evolution's.

Brian ships an update every 3 months, Slime Evolution every 2 months. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Brian | Slime Evolution |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (64 ratings)](https://appshunter.io/ios/app/brian-pet-evolution/id1105720370/reviews) | **[4.8 (597 ratings)](https://appshunter.io/ios/app/slime-evolution-raise-slimes/id1131103968/reviews)** |
| Number of ratings | 64 | **597** |
| Positive reviews | 44.4% of reviews | **91.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 79 MB | 111 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [SweatyChair Pty. Ltd.](https://appshunter.io/developer/781132111) | [SeHyeon Im](https://appshunter.io/developer/1294084939) |

## What reviewers say

### Brian

[App page](https://appshunter.io/ios/app/brian-pet-evolution/id1105720370)

Care for a sensitive, blob-like creature that can mutate into various forms through DNA injection. Navigate deadly obstacles and manage its well-being to prevent it from exploding into happiness. Purchase new creatures if your current one perishes.

**Highlights:** Physics-based gameplay, Pet evolution and mutation, Tamagotchi-style care, Side-scrolling obstacle navigation, DNA injection for mutations, Black humor elements

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bag of Poop | $0.99 | one-time |
| Tons of Poop | $3.99 | one-time |
| Unlimited Pack | $3.99 | one-time |
| Special Pack | $3.99 | one-time |
| Truck of Poops | $14.99 | one-time |


### 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 Brian free?

Brian 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, Brian or Slime Evolution?

Slime Evolution is rated higher. Brian averages 3.8 out of 5 from 64 ratings, while Slime Evolution averages 4.8 from 597 ratings.

### Do Brian or Slime Evolution have ads?

Slime Evolution shows ads; Brian does not.

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

Brian ships an update every 3 months, and Slime Evolution every 2 months. Most recently, Brian was updated on October 9, 2026 and Slime Evolution on October 13, 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.*