# O'Reilly vs CompTIA Security+ Exam Prep The clearest difference is review sentiment: CompTIA Security+ Exam Prep at 85% against O'Reilly's 46%. CompTIA Security+ Exam Prep also leads on rating (4.9 vs 4.7) and iOS requirement (15.0 vs 18.5). O'Reilly's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, update cadence and device support there is nothing between them. Both are free to download. CompTIA Security+ Exam Prep sells 5 in-app purchases, starting at $9.99 per 7 days. O'Reilly asks for nothing beyond the download. CompTIA Security+ Exam Prep holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: O'Reilly has 34K ratings behind it against 6.6K, so its average is the more settled of the two. Written reviews point the same way: 46% of O'Reilly's written reviews are positive against 85% of CompTIA Security+ Exam Prep's. O'Reilly ships an update every 2 weeks, CompTIA Security+ Exam Prep every 3 weeks. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively. ## The numbers | Metric | O'Reilly | CompTIA Security+ Exam Prep | | --- | --- | --- | | Price | Free | Free | | Rating | [4.7 (34K ratings)](https://appshunter.io/ios/app/oreilly/id881697395/reviews) | **[4.9 (6.6K ratings)](https://appshunter.io/ios/app/comptia-security-plus-exam-prep/id1501784033/reviews)** | | Number of ratings | **34K** | 6.6K | | Positive reviews | 46.3% of reviews | **85.0% of reviews** | | In-app purchases | **No** | Yes | | Ads | **No** | Yes | | Update frequency | **Every 2 weeks** | Every 3 weeks | | Monetization | Subscription | **Free with in-app purchases** | | Size | 63 MB | 91 MB | | Requires iOS | 18.5 | **15.0** | | Devices | iPhone, iPad | **iPhone, iPad, iPod** | | Age rating | 4+ | 4+ | | Developer | [O'Reilly Media, Inc.](https://appshunter.io/developer/312570215) | [Thanh Hung](https://appshunter.io/developer/1059077329) | ## What reviewers say ### O'Reilly [App page](https://appshunter.io/ios/app/oreilly/id881697395) Access a vast library of expert-led books, videos, and courses on business and technology trends. Learn online or offline, sync progress across devices, and personalize your reading experience. Discover and organize content with playlists for easy access. **Highlights:** Offline access to books, videos, and courses, Cross-device progress syncing, Content discovery and playlist creation, Personalized text display and night mode, Search across all learning materials, External keyboard support **Features:** iMessage stickers, Vision Pro support **In-app purchases:** none **What reviewers like** - 🚀 Great resource for learning - 👍 Excellent content and library - 💡 Helpful features like playlists - 🚀 Offline reading and downloads **What reviewers complain about** - 🐛 Buggy app with crashes and issues - 👎 Poor reading experience and navigation - 🔒 Frequent login issues - 👎 Inconsistent sync across devices **Reported bugs** - Frequent crashes and freezes - Unreliable downloads and offline access - Login issues and loss of progress - Inconsistent behavior across updates **Requested features** - Improved bookmarking and note-taking - Customizable text formatting and layout - Better search and content discovery - Seamless sync across devices ### CompTIA Security+ Exam Prep [App page](https://appshunter.io/ios/app/comptia-security-plus-exam-prep/id1501784033) Prepare for the CompTIA Security+ SY0-701 exam with realistic practice tests and AI-powered guidance. Master cybersecurity domains, track your progress, and receive personalized feedback to ensure you pass with confidence. **Highlights:** AI Mentora - Smart Cyber Tutor, Study by Domain, Realistic Practice Tests, Progress Tracker & AI Insights, SY0-701 Objective Alignment, Multiple Test Modes **Features:** macOS Compatibility, Vision Pro support **In-app purchases (5)** | Purchase | Price | Billing | | --- | --- | --- | | Security+ Subscription Weekly | $9.99 | per 7 days | | Security+ Subscription Monthly | $19.99 | per month | | Sec+ Quarterly Subscription | $39.99 | per 3 months | | Security+ Subscription Yearly | $69.99 | per year | | CompTIA Security+ Pro | $19.99 | one-time | **What reviewers like** - 🚀 Well-organized modules - 👍 Helpful explanations for answers - 🚀 Ability to memorize important information - 👍 Gamified learning experience - 🚀 Excellent practice questions **What reviewers complain about** - 💰 Premium version is expensive - 🐛 Inconsistent question formatting and wording - 🐛 Some incorrect answers and explanations - 🐛 Inability to revisit skipped questions - 🐛 Weak performance on cellular data **Reported bugs** - Certain sections get stuck at incomplete progress - Inconsistent gender/name references in questions - Incorrect information on cyber kill chain - Subscription upgrade charges more than advertised **Requested features** - Add performance-based questions (PBQs) - Implement randomization for review of missed questions - Introduce flashcard feature for terms and phrases - Allow users to report exam pass/fail status - Improve syncing of progress across devices ## Frequently asked questions ### Is O'Reilly free? O'Reilly is free to download, with no in-app purchases. ### Is CompTIA Security+ Exam Prep free? CompTIA Security+ Exam Prep is free to download, with in-app purchases available. ### Which has better reviews, O'Reilly or CompTIA Security+ Exam Prep? CompTIA Security+ Exam Prep is rated higher. O'Reilly averages 4.7 out of 5 from 34K ratings, while CompTIA Security+ Exam Prep averages 4.9 from 6.6K ratings. ### Do O'Reilly or CompTIA Security+ Exam Prep have ads? CompTIA Security+ Exam Prep shows ads; O'Reilly does not. ### Which is updated more often, O'Reilly or CompTIA Security+ Exam Prep? O'Reilly ships an update every 2 weeks, and CompTIA Security+ Exam Prep every 3 weeks. Most recently, O'Reilly was updated on October 3, 2026 and CompTIA Security+ Exam Prep on October 2, 2026. --- *Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*