# ISC2 Official Exam Prep vs RegEx

The clearest difference is rating: RegEx at 5.0 against ISC2 Official Exam Prep's 4.4. RegEx also leads on review sentiment (100% vs 69%). ISC2 Official Exam Prep's advantage is ratings volume (430 vs 23) and device support (4 vs 2). On price, update cadence, 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 $4.99 per 7 days and RegEx sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

RegEx holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: ISC2 Official Exam Prep has 430 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 69% of ISC2 Official Exam Prep's written reviews are positive against 100% of RegEx's.

ISC2 Official Exam Prep ships an update every 3 weeks, RegEx fortnightly. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ISC2 Official Exam Prep | RegEx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (430 ratings)](https://appshunter.io/ios/app/isc2-official-exam-prep/id1555533017/reviews) | **[5.0 (23 ratings)](https://appshunter.io/ios/app/regex-learning/id6744048728/reviews)** |
| Number of ratings | **430** | 23 |
| Positive reviews | 69.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 91 MB | 56 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [learnZapp](https://appshunter.io/developer/435622455) | [Lee Clayberg](https://appshunter.io/developer/1580321355) |

## 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 | $4.99 | per 7 days |
| All Access - 1 Month | $16.99 | per month |
| All Access - 3 Months | $44.99 | per 3 months |
| All Access - 6 Months | $79.99 | per 6 months |
| All Access - 1 Year | $139.99 | per year |


### RegEx

[App page](https://appshunter.io/ios/app/regex-learning/id6744048728)

Master regular expressions with interactive lessons and real-world challenges. This app guides you from beginner to expert, offering hands-on exercises and a live tester to solidify your understanding of complex patterns.

**Highlights:** Step-by-step lessons, Interactive exercises, Live regex tester, Comprehensive topics, Real-world scenarios, Progress tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete the Course | $4.99 | one-time |
| Advanced, Expert, Review | $4.99 | 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 RegEx free?

RegEx is free to download, with in-app purchases available.

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

RegEx is rated higher. ISC2 Official Exam Prep averages 4.4 out of 5 from 430 ratings, while RegEx averages 5.0 from 23 ratings.

### Do ISC2 Official Exam Prep or RegEx have ads?

Neither ISC2 Official Exam Prep nor RegEx shows ads.

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

ISC2 Official Exam Prep ships an update every 3 weeks, and RegEx fortnightly. Most recently, ISC2 Official Exam Prep was updated on October 18, 2026 and RegEx on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*