Readability vs Locked In
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Readability
This app uses AI-powered voice technology to provide personalized reading tutoring for children. It listens as kids read aloud, offers pronunciation correction, and assesses comprehension through interactive questions. The app also builds vocabulary and allows parents to track progress.
- AI-powered voice recognition for reading practice
- Real-time pronunciation correction
- Interactive voice-based comprehension questions
- Personalized vocabulary lists
- Parent dashboard for progress tracking
- Engaging grade-level stories with illustrations
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Readability’s award-winning Smart Reading & Comprehension Learning App gives your child the effectiveness of 1-on-1 tutoring. Our breakthrough voice-based technology LISTENS while your child READS, highlighting, and correcting any problem words. Kids from kindergarten to 6th grade will improve their reading, vocabulary, and comprehension skills all in the convenience of a mobile app. IMPROVE READING WITH 1-ON-1 TUTORING Readability prompts your child to read aloud and listens while providing reading help and real-time pronunciation correction as your child reads. If they get stuck, they can tap on the speaker icon to have Readability read the selected passage or word aloud. Readability automatically selects the right reading material for each child to maximize improvement and minimize the reading struggle. Your child will be eager to learn as these fun and educational grade-level stories come to life with bright illustrations. IMPROVE CRITICAL THINKING SKILLS Our industry-first comprehension with Interactive Voice-based Questions & Answers (IVQA™) asks your child questions verbally about the story they just read to improve their critical thinking skills. Your child then is prompted to answer the question verbally to ensure they fully understand what they read. Comprehension is as important as reading fluency, we deliver both in our smart reading app for kids. IMPROVE VOCABULARY Readability makes it easy to learn new words and their meaning with a personalized vocabulary list for your child. Your child can long-press on any word while reading to learn its pronunciation, meaning, and add it to their vocabulary list. Their vocabulary list is neatly organized A-Z and by book to further practice, review, and perfect new or difficult words. SET AND TRACK READING GOALS Set goals and follow your child’s progress with your very own Parent Dashboard detailing what they have read, reading duration, accuracy, comprehension, and speed. It also provides daily and weekly reading reports for accountability that can be shared with a teacher. ENGAGING BOOKS A massive selection of age-appropriate stories and educational works keep kids engaged and learning. Readability is the perfect reading app for kids. Getting started is easy with a 30-day free trial. Just download the app to sign up for your free trial. Cancel anytime. SUBSCRIPTION TERMS To access all app features, please subscribe to the 30-day free trial. Your subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will automatically be charged at the subscription price for renewal, within 24-hours prior to the end of the current billing period. You can manage your subscription and/or turn off auto-renewal by visiting your Account Settings after purchase. • Visit https://www.readabilitytutor.com/payment-policy/ for payment terms • Visit https://www.readabilitytutor.com/terms-of-use/ for terms of use Copyright 2023 Readability
Locked In
Prepare for the CompTIA Security+ (SY0-701) exam with this offline study companion. It offers concise lessons, practice questions, flashcards, and progress tracking to help you master key security concepts.
- Offline study companion
- SY0-701 domain-based lessons
- Practice questions and PBQ activities
- Flashcards with spaced repetition
- Searchable glossary
- Progress tracking and study plan
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Locked In! is a bite-sized study companion for the Security+ (SY0-701) exam. It is built for people who study in 10-minute windows on the train, at lunch, or between meetings. Every lesson is short and focused, and most end with a quick-check so you know what stuck. EXAM TIMELINE This app covers SY0-701 (Security+ V7). CompTIA expects Security+ V8 to launch on or around November 17, 2026, and SY0-701 stays available in English until June 11, 2027. WHAT'S INSIDE • 85 concise lessons spanning all five SY0-701 domains and all 28 objective headings • 48 inline quick-checks plus 82 unique multiple-choice practice questions, with at least one question for every objective • 12 original PBQ-style activities for categorizing, matching, and ordering practice • A 90-minute timed practice run with 50 blueprint-weighted questions selected without repeats from the 82-question bank, plus flags and a review grid; PBQs are practiced separately • 70 flashcards with an optional spaced-review queue • Searchable glossary of 73 terms and acronyms • 21 diagrams across 16 lessons, covering concepts such as the CIA triad, PKI, the TLS handshake, AAA, and incident response • Progress tracking, streaks, bookmarks, and personal notes • Weak-spot review that surfaces the topics you keep missing • Selected real-world frameworks and examples are labeled as supplemental context; consult the current official objectives for the authoritative exam scope WHO IT'S FOR • Career changers studying Security+ alongside a day job • Students supplementing a course or boot camp • Professionals refreshing before a recertification window • Anyone who learns better in short, focused sessions than long lectures WHY LOCKED IN! • Bundled lessons and practice content work offline with no account, analytics, third-party SDKs, or ads. App Store product loading, buying, and restoring require a network connection. • One-time unlock, no subscription • Written and maintained by one independent developer PRIVACY Locked In! stores your progress, bookmarks, and notes on-device. It does not include analytics or advertising SDKs, and the app does not transmit this study data to the developer. FREE SAMPLE AND FULL UNLOCK The free download includes 11 lesson previews, quizzes of up to 10 questions, the 13-card Domain 1 flashcard deck, two Domain 1 PBQ-style activities, 44 glossary definitions, and spaced review for the free cards and any quiz question. One non-consumable in-app purchase unlocks the remaining 74 lessons, all 70 flashcards, all 12 PBQ-style activities, the other 29 glossary definitions (the ones that repeat paid flashcards), quizzes up to 50 questions, and the 90-minute timed practice mode. No subscription. --- DISCLAIMER Not affiliated with, endorsed by, or sponsored by CompTIA. CompTIA® and Security+® are registered trademarks of CompTIA, Inc.
Screenshots
Verdict
The clearest difference is monetization model: Locked In at free with in-app purchases against Readability's subscription. On price, update cadence, ads and in-app purchases 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. Readability sells 2 in-app purchases, starting at $19.99 per month and Locked In sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Readability ships an update fortnightly, Locked In every 2 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | Readability | Locked In |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (25K ratings) — better | — |
| Positive reviews | 55.8% of reviews | — |
| Number of ratings | 25K — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 283 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | e4site Inc. | OMAR DANIEL GRAZIANO |
Bugs and requests
Readability
Reported bugs
4 issues- App charges for free trial
- Subscription cancellation issues
- Inconsistent app behavior
- Compatibility problems on some devices
Requested features
4 requests- More customization options for text and background
- Improved voice recognition accuracy
- Expanded book selection
- Better comprehension testing
Locked In
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Readability
- Readability Tutor1 Month trial$19.991 Month
- Readability Tutor Annual1 Month trial$139.991 Year
Locked In
- Locked In! Security+ Unlock$14.99
Questions
Is Readability free?
Is Locked In free?
Do Readability or Locked In have ads?
Which is updated more often, Readability or Locked In?
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