# Save Willis. vs PurrbitPop

The clearest difference is in-app purchases: Save Willis. at none against PurrbitPop's 5. On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Save Willis. | PurrbitPop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/save-willis/id6737624808/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Monetization | Ad-supported | — |
| Size | 267 MB | 161 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Robb Entertainment Interactive (REI) - robbent.com](https://appshunter.io/developer/849377440) | [theCommonist](https://appshunter.io/developer/1808643159) |

## What reviewers say

### 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


### PurrbitPop

[App page](https://appshunter.io/ios/app/purrbitpop/id6745782416)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Moons Starter Pack | $0.99 | one-time |
| Moons Popular Pack | $2.99 | one-time |
| Moons Value Pack | $4.99 | one-time |
| Moons Big Deal | $9.99 | one-time |
| Moons Best Deal | $19.99 | one-time |


## Frequently asked questions

### Is Save Willis. free?

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

### Is PurrbitPop free?

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

### Do Save Willis. or PurrbitPop have ads?

Both Save Willis. and PurrbitPop show ads.

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

Save Willis. ships an update weekly, and PurrbitPop weekly. Most recently, Save Willis. was updated on September 17, 2026 and PurrbitPop on September 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.*