# Cat Mouse vs Sherlock

The clearest difference is in-app purchases: Cat Mouse at none against Sherlock's 4. Cat Mouse also leads on ads (none vs shown). Sherlock's advantage is update cadence (every 3 days vs weekly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sherlock sells 4 one-off in-app purchases. Cat Mouse asks for nothing beyond the download.

Cat Mouse ships an update weekly, Sherlock every 3 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Cat Mouse | Sherlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Size | 37 MB | 162 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duong Do](https://appshunter.io/developer/1455884076) | [Hussein Bani Ali](https://appshunter.io/developer/1827091593) |

## What reviewers say

### Cat Mouse

[App page](https://appshunter.io/ios/app/cat-mouse/id6737277962)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sherlock

[App page](https://appshunter.io/ios/app/sherlock-spot-the-difference/id6748704430)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Coins | $0.99 | one-time |
| No Ads | $0.99 | one-time |
| 40 Coins | $2.99 | one-time |
| 100 Coins | $9.99 | one-time |


## Frequently asked questions

### Is Cat Mouse free?

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

### Is Sherlock free?

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

### Do Cat Mouse or Sherlock have ads?

Sherlock shows ads; Cat Mouse does not.

### Which is updated more often, Cat Mouse or Sherlock?

Cat Mouse ships an update weekly, and Sherlock every 3 days. Most recently, Cat Mouse was updated on October 25, 2026 and Sherlock on October 25, 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.*