# CDP Knowledge Test vs ISC2 CISSP Test Prep 2025

The clearest difference is ads: CDP Knowledge Test at none against ISC2 CISSP Test Prep 2025's shown. ISC2 CISSP Test Prep 2025's advantage is iOS requirement (15.0 vs 17.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. CDP Knowledge Test sells 2 in-app purchases, starting at $11.99 per month and ISC2 CISSP Test Prep 2025 sells 3 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | CDP Knowledge Test | ISC2 CISSP Test Prep 2025 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/isc2-cissp-test-prep-2025/id6754660771/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 53 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Yahya Al Tamari](https://appshunter.io/developer/1844916998) |

## What reviewers say

### CDP Knowledge Test

[App page](https://appshunter.io/ios/app/cdp-knowledge-test/id6740606245)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $11.99 | per month |
| Lifetime version | $24.99 | one-time |


### ISC2 CISSP Test Prep 2025

[App page](https://appshunter.io/ios/app/isc2-cissp-test-prep-2025/id6754660771)

Prepare for the CISSP certification exam with a comprehensive study tool. It offers an extensive question bank, realistic simulations, and detailed explanations to build confidence and track progress. Regular updates ensure content stays current with the latest exam guidelines.

**Highlights:** Extensive question bank, Realistic exam simulations, Detailed explanations, Progress tracking analytics, User-friendly interface, Regular content updates

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $8.99 | per 7 days |
| Premium Subscription | $8.99 | per 7 days |
| Premium Subscription | $124.99 | per year |


## Frequently asked questions

### Is CDP Knowledge Test free?

CDP Knowledge Test is free to download, with in-app purchases available.

### Is ISC2 CISSP Test Prep 2025 free?

ISC2 CISSP Test Prep 2025 is free to download, with in-app purchases available.

### Do CDP Knowledge Test or ISC2 CISSP Test Prep 2025 have ads?

ISC2 CISSP Test Prep 2025 shows ads; CDP Knowledge Test does not.

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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.*