# Brain Collector vs Oily Cat

The clearest difference is in-app purchases: Oily Cat at none against Brain Collector's 1. Oily Cat also leads on update cadence (every 3 days vs monthly) and device support. On price there is nothing between them.

Both are free to download. Brain Collector sells 1 one-off in-app purchase. Oily Cat asks for nothing beyond the download.

Brain Collector ships an update monthly, Oily Cat every 3 days. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Brain Collector | Oily Cat |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | — | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | — |
| Size | 120 MB | 117 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Leonardo Carlos Comotti Kasperavicius](https://appshunter.io/developer/1888935035) | [Jose Varela](https://appshunter.io/developer/336500035) |

## What reviewers say

### Brain Collector

[App page](https://appshunter.io/ios/app/brain-collector/id477255818)

Guide a doctor through a laboratory overrun by zombies to recover a spilled brain collection. Navigate 100 unique puzzle levels, avoiding enemies and reaching the exit portal.

**Highlights:** 100 challenging puzzle levels, 5 unique worlds, Collect all brains, Avoid zombies, Reach the exit portal, Retro pixel art style

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Collector Ads Remove | $0.99 | one-time |


### Oily Cat

[App page](https://appshunter.io/ios/app/oily-cat/id6465697795)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brain Collector free?

Brain Collector is free to download, with in-app purchases available.

### Is Oily Cat free?

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

### Which is updated more often, Brain Collector or Oily Cat?

Brain Collector ships an update monthly, and Oily Cat every 3 days. Most recently, Brain Collector was updated on October 10, 2026 and Oily Cat on October 20, 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.*