CompTIA A+ & Security + Prep vs Locked In
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CompTIA A+ & Security + Prep
Prepare for CompTIA certification exams with a personalized study plan. Practice with thousands of questions, track your progress, and compare your scores to the community average to boost your confidence and pass on your first attempt.
- Personalized study plan
- 5000+ practice questions
- Track strengths and weaknesses
- Detailed test statistics
- Compare scores to community average
- Choose exam topics
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Pass your CompTIA exams with flying colors! Boost your confidence in passing the first time with our mobile app and a personal study plan based on your current skill and requirements. Based in Downers Grove, Illinois, CompTIA issues vendor-neutral professional certifications in over 120 countries. The organization releases over 50 industry studies annually to track industry trends and changes. Over 2.2 million people have earned CompTIA certifications since the association was established. Key features: - Choose from different topics required to receive a certification - Practice with 5000+ questions - Track your strengths and weaknesses within Stats section of the app - Study detailed statistics of every test you take - Compare your score to the community average for almost any type of exam - - - - Purchases, subscriptions and terms You need to buy a lifetime access or subscribe to get access to all features, courses and questions. The cost of the purchase is charged to your iTunes account. Subscriptions are auto-renewable and are billed at the rate and period selected depending on the subscription plan. Users’ accounts are charged for auto-renewal within 24 hours prior to the end of the current period. Subscriptions can be managed and auto-renewal can be turned off in Account Settings in iTunes after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of use: https://mastrapi.com/terms.html Privacy policy: https://mastrapi.com/policy.html
Locked In
Prepare for the CompTIA Linux+ XK0-006 exam with this offline study companion. It offers concise lessons, practice questions, flashcards, and mock exams covering all exam domains. Track your progress and review weak topics to ensure readiness.
- Concise lessons by exam domain
- Practice questions with explanations
- Timed mock exams
- Command-focused flashcards
- Searchable glossary
- Progress tracking and study plan
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Locked-In is a focused study companion for the CompTIA Linux+ XK0-006 exam. It is built for short sessions, with concise lessons, quick checks, practice, and review tools that work fully offline. WHAT'S INCLUDED - 60 lessons across all five XK0-006 domains: System Management (23%), Services and User Management (20%), Security (18%), Automation, Orchestration and Scripting (17%), and Troubleshooting (22%) - One topic per published objective, all 29 of them, so you can study against the blueprint - Coverage of the areas new to XK0-006, including virtualization with KVM and QEMU, containers with Docker and Podman, Python basics, Git, and the responsible use of AI - Visual aids for the boot process, the filesystem hierarchy, permissions, systemd, LVM, RAID, networking, SELinux, containers, and the virtualization stack - Inline quick checks at the end of every lesson - 435 unique multiple-choice practice questions with explanations, weighted to match the published domain percentages - Scenario and PBQ-style categorization, ordering, and matching activities - A 90-question, 90-minute timed mock exam with flagging, navigation, and a final review screen - Command-focused flashcards with spaced repetition - A searchable glossary covering the official CompTIA Linux+ acronym list and key concepts - Progress by domain, quiz history, study streaks, bookmarks, personal notes, weak-topic review, and an optional study plan FREE PREVIEW AND FULL UNLOCK A starter selection of lessons is free so you can evaluate the library first. A single one-time purchase unlocks the remaining lessons, the full question bank, and every study mode. There is no subscription and no account. IMPORTANT SCOPE NOTE Practice questions and PBQ-style activities are original study material, not official CompTIA exam items. The timed set is a study experience, not a reproduction of the live exam. Verify the current objectives, format, and policies directly with CompTIA. PRIVACY Study progress is stored on your device. The app requires no account, contains no advertising or third-party analytics, and does not sell or share personal data. Locked-In is not affiliated with, endorsed by, or sponsored by CompTIA, Inc. CompTIA and Linux+ are trademarks of CompTIA, Inc. Linux is a registered trademark of Linus Torvalds. Locked-In is an independent study aid and does not guarantee exam results.
Screenshots
Verdict
The clearest difference is ratings volume: CompTIA A+ & Security + Prep at 2.2K against Locked In's 1. CompTIA A+ & Security + Prep also leads on iOS requirement (13.0 vs 17.0). Locked In's advantage is rating (5.0 vs 4.7) and update cadence (every 2 weeks vs every 5 weeks). On price, ads, in-app purchases and monetization model 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
Both are free to download. CompTIA A+ & Security + Prep sells 2 in-app purchases, starting at $24.99 per month and Locked In sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Locked In holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: CompTIA A+ & Security + Prep has 2.2K ratings behind it against 1, so its average is the more settled of the two.
CompTIA A+ & Security + Prep ships an update every 5 weeks, Locked In every 2 weeks. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.
| Parameter | CompTIA A+ & Security + Prep | Locked In |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.2K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 31.0% of reviews | — |
| Number of ratings | 2.2K — better | 1 |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 36 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | MastrAPI | OMAR DANIEL GRAZIANO |
Customer experience
CompTIA A+ & Security + Prep
Locked In
Bugs and requests
CompTIA A+ & Security + Prep
Reported bugs
4 issues- Questions referencing missing pictures
- Incorrect answers and explanations
- Subscription issues across devices
- Reporting feature not functioning
Requested features
4 requests- Ability to target specific exam objectives
- Dark mode option
- More zoom options
- Improved exam version tracking
Locked In
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CompTIA A+ & Security + Prep
- Monthly with Trial7 Days trial$24.991 Month
- Lifetime$99.99
Locked In
- Linux+ Full Unlock$9.99
Questions
Is CompTIA A+ & Security + Prep free?
Is Locked In free?
Which has better reviews, CompTIA A+ & Security + Prep or Locked In?
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Which is updated more often, CompTIA A+ & Security + Prep or Locked In?
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