# ISC2 Official Exam Prep vs CISSP Exam Certification Prep

The clearest difference is review sentiment: ISC2 Official Exam Prep at 69% against CISSP Exam Certification Prep's 20%. ISC2 Official Exam Prep also leads on update cadence (every 3 weeks vs every 4 months) and device support (4 vs 2). CISSP Exam Certification Prep's advantage is rating (4.7 vs 4.4) and iOS requirement (13.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. ISC2 Official Exam Prep sells 5 in-app purchases, starting at $5.99 per 7 days and CISSP Exam Certification Prep sells 2 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.

CISSP Exam Certification Prep holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 447 and 177 respectively. Written reviews complicate that: 69% of ISC2 Official Exam Prep's written reviews are positive against 20% of CISSP Exam Certification Prep's, so the app with the better star average is not the one people write more warmly about.

ISC2 Official Exam Prep ships an update every 3 weeks, CISSP Exam Certification Prep every 4 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ISC2 Official Exam Prep | CISSP Exam Certification Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (447 ratings)](https://appshunter.io/ios/app/isc2-official-exam-prep/id1555533017/reviews) | **[4.7 (177 ratings)](https://appshunter.io/ios/app/cissp-exam-certification-prep/id1572742576/reviews)** |
| Number of ratings | **447** | 177 |
| Positive reviews | **69.4% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 91 MB | 36 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [learnZapp](https://appshunter.io/developer/435622455) | [MastrAPI](https://appshunter.io/developer/1618627725) |

## What reviewers say

### ISC2 Official Exam Prep

[App page](https://appshunter.io/ios/app/isc2-official-exam-prep/id1555533017)

Prepare for CISSP, CCSP, and SSCP certification exams with official study materials. Access thousands of questions, flashcards, and glossary terms. Track your progress and build custom practice tests to identify and improve weak areas.

**Highlights:** Thousands of exam-specific questions, Detailed explanations, Flashcards and glossary, Readiness score, Custom test builder, Progress tracker, Mock exams

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access - 1 Week | $5.99 | per 7 days |
| All Access - 1 Month | $19.99 | per month |
| All Access - 3 Months | $49.99 | per 3 months |
| All Access - 6 Months | $79.99 | per 6 months |
| All Access - 1 Year | $99.99 | per year |


### CISSP Exam Certification Prep

[App page](https://appshunter.io/ios/app/cissp-exam-certification-prep/id1572742576)

Prepare for your CISSP certification exam with a personalized study plan and over 700 practice questions. Track your progress, identify strengths and weaknesses, and compare your scores to the community average to boost your confidence and pass the exam.

**Highlights:** Personalized study plan, 700+ practice questions, Topic-based learning, Strength and weakness tracking, Detailed test statistics, Community score comparison

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly with Trial | $24.99 | per month |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is ISC2 Official Exam Prep free?

ISC2 Official Exam Prep is free to download, with in-app purchases available.

### Is CISSP Exam Certification Prep free?

CISSP Exam Certification Prep is free to download, with in-app purchases available.

### Which has better reviews, ISC2 Official Exam Prep or CISSP Exam Certification Prep?

CISSP Exam Certification Prep is rated higher. ISC2 Official Exam Prep averages 4.4 out of 5 from 447 ratings, while CISSP Exam Certification Prep averages 4.7 from 177 ratings.

### Do ISC2 Official Exam Prep or CISSP Exam Certification Prep have ads?

Neither ISC2 Official Exam Prep nor CISSP Exam Certification Prep shows ads.

### Which is updated more often, ISC2 Official Exam Prep or CISSP Exam Certification Prep?

ISC2 Official Exam Prep ships an update every 3 weeks, and CISSP Exam Certification Prep every 4 months. Most recently, ISC2 Official Exam Prep was updated on November 7, 2026 and CISSP Exam Certification Prep on November 3, 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.*