# Classified Information vs Perfect Challenge Master

The clearest difference is update cadence: Perfect Challenge Master at every 4 days against Classified Information's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Classified Information ships an update every 2 months, Perfect Challenge Master every 4 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Classified Information | Perfect Challenge Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (28 ratings)](https://appshunter.io/ios/app/classified-information/id6504557313/reviews)** | — |
| Number of ratings | **28** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 176 MB | 177 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YALP GAMES LLC](https://appshunter.io/developer/1734473116) | [Tran Tien Thanh](https://appshunter.io/developer/1713107024) |

## What reviewers say

### Classified Information

[App page](https://appshunter.io/ios/app/classified-information/id6504557313)

A captivating puzzle game where you fill in missing words to complete stories, quotes, and passages. Sharpen your vocabulary and comprehension skills across hundreds of engaging levels and diverse themes. Utilize hints and clues to progress through this educational and fun linguistic challenge.

**Highlights:** Hundreds of engaging levels, Diverse themes, Hints and clues system, Vocabulary and comprehension improvement, Drag and drop word placement, Progress and unlock new themes

**Features:** macOS Compatibility

**In-app purchases:** none


### Perfect Challenge Master

[App page](https://appshunter.io/ios/app/perfect-challenge-master/id6504667136)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Classified Information free?

Classified Information is free to download, with no in-app purchases.

### Is Perfect Challenge Master free?

Perfect Challenge Master is free to download, with no in-app purchases.

### Do Classified Information or Perfect Challenge Master have ads?

Both Classified Information and Perfect Challenge Master show ads.

### Which is updated more often, Classified Information or Perfect Challenge Master?

Classified Information ships an update every 2 months, and Perfect Challenge Master every 4 days. Most recently, Classified Information was updated on October 10, 2026 and Perfect Challenge Master 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.*