# Puzzle Brainstorm vs Save Willis.

The clearest difference is in-app purchases: Save Willis. at none against Puzzle Brainstorm's 5. Save Willis. also leads on update cadence (weekly vs every 15 months). Puzzle Brainstorm's advantage is ads (none vs shown). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Puzzle Brainstorm sells 5 one-off in-app purchases. Save Willis. asks for nothing beyond the download.

Puzzle Brainstorm ships an update every 15 months, Save Willis. weekly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Puzzle Brainstorm | 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 | **No** | Yes |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 29 MB | 267 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [R-V Games LLC](https://appshunter.io/developer/1761826045) | [Robb Entertainment Interactive (REI) - robbent.com](https://appshunter.io/developer/849377440) |

## What reviewers say

### Puzzle Brainstorm

[App page](https://appshunter.io/ios/app/puzzle-brainstorm/id1366587369)

Develop abstract thinking and problem-solving skills by guiding electrical charges through intricate puzzles. Discover unique solutions and find the shortest path to victory. Features refined mechanics, increasing difficulty, and stunning visuals.

**Highlights:** Abstract thinking development, Unique solution finding, Refined game mechanics, Gradually increasing difficulty, 120+ puzzles, Stunning visual effects

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zone 2 | $0.99 | one-time |
| Zone 3 | $0.99 | one-time |
| Zone 4 | $0.99 | one-time |
| Zone 5 | $0.99 | one-time |
| Zone 6 | $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 Puzzle Brainstorm free?

Puzzle Brainstorm is free to download, with in-app purchases available.

### Is Save Willis. free?

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

### Do Puzzle Brainstorm or Save Willis. have ads?

Save Willis. shows ads; Puzzle Brainstorm does not.

### Which is updated more often, Puzzle Brainstorm or Save Willis.?

Puzzle Brainstorm ships an update every 15 months, and Save Willis. weekly. Most recently, Puzzle Brainstorm was updated on November 2, 2026 and Save Willis. on October 30, 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.*