# Pocket Prep CISSP 2026 vs OnSecure eBook Reader

The clearest difference is rating: Pocket Prep CISSP 2026 at 4.7 against OnSecure eBook Reader's 1.0. Pocket Prep CISSP 2026 also leads on ratings volume (1.2K vs 1) and update cadence (every 3 weeks vs every 2 months). OnSecure eBook Reader's advantage is in-app purchases (none vs 7) and iOS requirement (11.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Pocket Prep CISSP 2026 sells 7 in-app purchases, starting at $20.99 per month. OnSecure eBook Reader asks for nothing beyond the download.

Pocket Prep CISSP 2026 holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Pocket Prep CISSP 2026 has 1.2K ratings behind it against 1, so its average is the more settled of the two.

Pocket Prep CISSP 2026 ships an update every 3 weeks, OnSecure eBook Reader every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Pocket Prep CISSP 2026 | OnSecure eBook Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/pocket-prep-cissp-2026/id676938992/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/onsecure-ebook-reader/id6453166683/reviews) |
| Number of ratings | **1.2K** | 1 |
| Positive reviews | 55.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 95 MB | 108 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pocket Prep, Inc.](https://appshunter.io/developer/478383132) | [OnFulfillment Inc.](https://appshunter.io/developer/1699207607) |

## What reviewers say

### Pocket Prep CISSP 2026

[App page](https://appshunter.io/ios/app/pocket-prep-cissp-2026/id676938992)

Prepare for your CISSP certification with over 1,000 practice questions and three full-length mock exams. This app helps you reinforce key concepts, track progress, and build confidence for test day. Study anytime, anywhere with tailored modes and expert-crafted content.

**Highlights:** 1,000 CISSP practice questions, 3 full-length mock exams, Detailed explanations and references, Performance analytics, Variety of study modes, Pass Guarantee

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium CISSP Prep Monthly | $20.99 | per month |
| Premium CISSP Prep Quarterly | $49.99 | per 3 months |
| Premium CISSP Prep Yearly | $124.99 | per year |
| CISSP Bridge | $14.99 | one-time |
| CISSP Classic | $24.99 | one-time |
| CISSP Special | $25.99 | one-time |
| CISSP Premium | $39.99 | one-time |

**What reviewers like**

- 👍 Helpful study tool
- 🚀 Convenient for on-the-go learning
- 💡 Customizable practice tests
- 🚀 Detailed answer explanations

**What reviewers complain about**

- 🐛 Buggy and crashes frequently
- 🔒 Issues with account/progress tracking
- 🕰️ Slow performance and long load times
- 💰 Expensive for the quality

**Reported bugs**

- App resets to free version periodically
- Inconsistent question tracking and progress
- Repeated questions in practice tests

**Requested features**

- More detailed explanations for incorrect answers
- Ability to select specific exam domains to focus on
- Offline mode for studying without internet access


### OnSecure eBook Reader

[App page](https://appshunter.io/ios/app/onsecure-ebook-reader/id6453166683)

This application offers an interactive eBook reading experience with a fresh design. It integrates books with videos, audio, images, and interactive elements to enhance learning and engagement.

**Highlights:** Interactive eBook reader, Integrated videos and audio, Image banks, Synched audio, Book download capabilities, Engaging learning experience

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pocket Prep CISSP 2026 free?

Pocket Prep CISSP 2026 is free to download, with in-app purchases available.

### Is OnSecure eBook Reader free?

OnSecure eBook Reader is free to download, with no in-app purchases.

### Which has better reviews, Pocket Prep CISSP 2026 or OnSecure eBook Reader?

Pocket Prep CISSP 2026 is rated higher. Pocket Prep CISSP 2026 averages 4.7 out of 5 from 1.2K ratings, while OnSecure eBook Reader averages 1.0 from 1 ratings.

### Do Pocket Prep CISSP 2026 or OnSecure eBook Reader have ads?

Neither Pocket Prep CISSP 2026 nor OnSecure eBook Reader shows ads.

### Which is updated more often, Pocket Prep CISSP 2026 or OnSecure eBook Reader?

Pocket Prep CISSP 2026 ships an update every 3 weeks, and OnSecure eBook Reader every 2 months. Most recently, Pocket Prep CISSP 2026 was updated on October 21, 2026 and OnSecure eBook Reader on October 24, 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.*