# Brain Collector vs Save Willis.

The clearest difference is in-app purchases: Save Willis. at none against Brain Collector's 1. Save Willis. also leads on update cadence (weekly vs monthly) and device support. On price and review sentiment there is nothing between them.

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

Brain Collector ships an update monthly, Save Willis. weekly. The most recent releases landed on October 10, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Brain Collector | Save Willis. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/save-willis/id6737624808/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | — | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 120 MB | 267 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [Leonardo Carlos Comotti Kasperavicius](https://appshunter.io/developer/1888935035) | [Robb Entertainment Interactive (REI) - robbent.com](https://appshunter.io/developer/849377440) |

## 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 |


### Save Willis.

[App page](https://appshunter.io/ios/app/save-willis/id6737624808)

Guide a diver to safety by strategically firing a cannon to push buttons and release him from water tanks. Solve physics-based puzzles before his oxygen runs out to progress through increasingly challenging levels.

**Highlights:** Physics-based puzzle gameplay, Strategic cannon firing, Timed challenges, Progressive levels, Diver rescue objective

**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 Save Willis. free?

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

### Which is updated more often, Brain Collector or Save Willis.?

Brain Collector ships an update monthly, and Save Willis. weekly. Most recently, Brain Collector was updated on October 10, 2026 and Save Willis. 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.*