Comparison

ISC2 Official Exam Prep vs OnSecure eBook Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ISC2 Official Exam Prep

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
Read full description

Pass your ISC2 exam with the official study app for CISSP, CCSP, and SSCP — 5,000+ practice questions based on Sybex/Wiley content and domain-level Readiness Scores that tell you exactly when you're ready. Start with a diagnostic test — no account required. Built on LearnZapp, trusted by 250,000+ certification candidates. ONE APP. THREE ISC2 EXAMS. CISSP · CCSP · SSCP Study with content from Sybex/Wiley — the official ISC2 Study Guide series used by professionals worldwide. ALIGNED WITH THE CURRENT EXAM OUTLINES Content is mapped to the latest ISC2 exam outlines for CISSP, CCSP, and SSCP — so you're studying what's actually on the exam today, not outdated material. KNOW EXACTLY WHEN YOU'RE READY Most candidates either overstudy or go in too early. Your Readiness Score solves both. It analyzes your performance across every domain — CISSP's 8 domains, CCSP's 6 domains, SSCP's 7 domains — and shows exactly where you stand. Know what to focus on. Know when you're ready. Walk into your exam with confidence. STUDY SMARTER, NOT HARDER Don't waste time on what you already know. Create custom tests by domain or topic, or let the app prioritize questions from your weakest areas based on your Readiness Score. Review missed and bookmarked questions, reinforce key concepts, and stay consistent with Question of the Day. Every session is focused, targeted, and designed to improve your weakest domains. UNDERSTAND, DON'T JUST MEMORIZE Every question includes a detailed explanation that breaks down the reasoning behind the correct answer. Study Articles go deeper — helping you understand concepts, frameworks, and real-world context across each domain. WHAT'S INCLUDED * 5,000+ practice questions across CISSP, CCSP, and SSCP * 1,800+ flashcards for rapid recall * 2,500+ study articles with in-depth concept coverage * Domain-level Readiness Score analytics * Custom Test Builder with weakness-targeted prioritization * Question of the Day * Glossary for instant reference STUDY ANYWHERE. PICK UP WHERE YOU LEFT OFF. Available on mobile, tablet, and web. Start a session on your phone and continue on your laptop. Your progress syncs seamlessly across devices. TRY BEFORE YOU COMMIT Start with a full diagnostic test — no account required. After signing up, explore practice questions, flashcards, and study articles across all three exams — enough to fully experience the app before upgrading. When you're ready, one subscription unlocks everything — all three exams, all content. Monthly, quarterly, and annual plans available. TRUSTED BY 250,000+ PROFESSIONALS LearnZapp has helped 250,000+ professionals prepare for certifications across cybersecurity, IT, finance, and project management. Frequently mentioned by CISSP candidates in the r/cissp community for identifying knowledge gaps and reinforcing core concepts — exactly what you need to build exam readiness. SUBSCRIPTION DETAILS Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage subscriptions and turn off auto-renewal in your Account Settings after purchase. Terms of Service: https://www.learnzapp.com/terms.html Privacy Policy: https://www.learnzapp.com/privacy-statement.html

About

OnSecure eBook Reader

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
Read full description

OnSecure is an interactive eBook Reader Application. The App comes in a stunning new design, refreshing eBook Interface, book download capabilities and a host of features to enhance your learning. It seamlessly integrates eBooks with videos, synched audios, image banks and interactivities for an engaging eBook reading experience.

Screenshots

ISC2 Official Exam Prep4 screens
OnSecure eBook Reader4 screens

Verdict

The call

The clearest difference is rating: ISC2 Official Exam Prep at 4.4 against OnSecure eBook Reader's 1.0. ISC2 Official Exam Prep also leads on ratings volume (407 vs 1) and update cadence (fortnightly vs every 2 months). OnSecure eBook Reader's advantage is in-app purchases (none vs 5) and iOS requirement (11.0 vs 15.6). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ISC2 Official Exam Prep sells 5 in-app purchases, starting at $4.99 per 7 days. OnSecure eBook Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ISC2 Official Exam Prep holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: ISC2 Official Exam Prep has 407 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

ISC2 Official Exam Prep ships an update fortnightly, OnSecure eBook Reader every 2 months. The most recent releases landed on September 22, 2026 and June 5, 2026 respectively.

Scorecard6 real differences · 4 level
ISC2 Official Exam Prep versus OnSecure eBook Reader: the parameters behind the verdict, then further details
ParameterISC2 Official Exam PrepOnSecure eBook Reader
PriceFreeFree
Rating4.4 (407 ratings) — better1.0 (1 ratings)
Positive reviews69.3% of reviews—
Number of ratings407 — better1
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size87 MB108 MB
Age rating4+4+
DeveloperlearnZappOnFulfillment Inc.

Customer experience

ISC2 Official Exam Prep

All ratings407 ratings
Positive82.6%
Neutral8.4%
Negative9.1%
Written reviews228 reviews
Positive69.3%
Neutral14.5%
Negative16.2%

OnSecure eBook Reader

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

5 purchases

ISC2 Official Exam Prep

Subscriptions5
  • All Access - 1 Week$4.997 Days
  • All Access - 1 Month$16.991 Month
  • All Access - 3 Months$44.993 Months
Show 2 more
  • All Access - 6 Months$79.996 Months
  • All Access - 1 Year$139.991 Year
None

OnSecure eBook Reader

No in-app purchases

Questions

Is ISC2 Official Exam Prep free?
ISC2 Official Exam Prep 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, ISC2 Official Exam Prep or OnSecure eBook Reader?
ISC2 Official Exam Prep is rated higher. ISC2 Official Exam Prep averages 4.4 out of 5 from 407 ratings, while OnSecure eBook Reader averages 1.0 from 1 ratings.
Do ISC2 Official Exam Prep or OnSecure eBook Reader have ads?
Neither ISC2 Official Exam Prep nor OnSecure eBook Reader shows ads.
Which is updated more often, ISC2 Official Exam Prep or OnSecure eBook Reader?
ISC2 Official Exam Prep ships an update fortnightly, and OnSecure eBook Reader every 2 months. Most recently, ISC2 Official Exam Prep was updated on September 22, 2026 and OnSecure eBook Reader on June 5, 2026.

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