# Crest Security Review vs Mindset Prep · ISO Exam Prep

The clearest difference is in-app purchases: Crest Security Review at none against Mindset Prep · ISO Exam Prep's 3. Crest Security Review also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.0). Mindset Prep · ISO Exam Prep's advantage is update cadence (every 2 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Mindset Prep · ISO Exam Prep sells 3 in-app purchases, starting at $19.99 per month. Crest Security Review asks for nothing beyond the download.

Crest Security Review ships an update every 3 months, Mindset Prep · ISO Exam Prep every 2 weeks. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Crest Security Review | Mindset Prep · ISO Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 22 MB | 38 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [millipedia Limited](https://appshunter.io/developer/632708658) | [Mindset Cyber](https://appshunter.io/developer/1894765574) |

## What reviewers say

### Crest Security Review

[App page](https://appshunter.io/ios/app/crest-security-review/id1406382185)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mindset Prep · ISO Exam Prep

[App page](https://appshunter.io/ios/app/mindset-prep-iso-exam-prep/id6771579395)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $19.99 | per month |
| Premium 3 Months | $44.99 | per 3 months |
| Premium Annual | $119.99 | per year |


## Frequently asked questions

### Is Crest Security Review free?

Crest Security Review is free to download, with no in-app purchases.

### Is Mindset Prep · ISO Exam Prep free?

Mindset Prep · ISO Exam Prep is free to download, with in-app purchases available.

### Do Crest Security Review or Mindset Prep · ISO Exam Prep have ads?

Mindset Prep · ISO Exam Prep shows ads; Crest Security Review does not.

### Which is updated more often, Crest Security Review or Mindset Prep · ISO Exam Prep?

Crest Security Review ships an update every 3 months, and Mindset Prep · ISO Exam Prep every 2 weeks. Most recently, Crest Security Review was updated on October 29, 2026 and Mindset Prep · ISO Exam Prep on October 31, 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.*