# Fire Investigation Prep App vs permutation group

The clearest difference is price: permutation group at Free against Fire Investigation Prep App's $2.99. permutation group also leads on iOS requirement (16.6 vs 18.0). Fire Investigation Prep App's advantage is chart position (#190 vs unranked). On ads, in-app purchases and device support there is nothing between them.

permutation group is free to download; Fire Investigation Prep App costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Fire Investigation Prep App | permutation group |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fire-investigation-prep-app/id6746952464/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Best chart rank | **#190** | — |
| Size | 10 MB | 6 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anthony Harvey](https://appshunter.io/developer/1478197285) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Fire Investigation Prep App

[App page](https://appshunter.io/ios/app/fire-investigation-prep-app/id6746952464)

**Currently charting:** #190 Top Paid · Education (US App Store)

This app provides a comprehensive guide to the science of fire investigation, covering core concepts, investigative methodology, and evidence analysis. It offers in-depth modules with practical examples, quizzes, and mnemonic devices to enhance learning for professionals and students alike.

**Highlights:** Extensive content with 85+ learning points, 20+ in-depth lessons on key topics, Structured learning by difficulty and category, Interactive quizzes for knowledge reinforcement, Real-world scenarios and clear explanations, Offline access for learning anywhere, Progress tracking

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

**In-app purchases:** none


### permutation group

[App page](https://appshunter.io/ios/app/permutation-group/id6757737753)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fire Investigation Prep App free?

Fire Investigation Prep App costs $2.99, with no in-app purchases.

### Is permutation group free?

permutation group is free to download, with no in-app purchases.

### Do Fire Investigation Prep App or permutation group have ads?

Neither Fire Investigation Prep App nor permutation group shows ads.

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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.*