Liminal vs ReadUnlock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Liminal
Explore Western philosophy with a comprehensive, self-paced curriculum. Access lessons, philosopher profiles, key terms, and quizzes offline. Learn at your own pace with audio narration and interactive features.
- Comprehensive 4-year philosophy curriculum
- 104 lessons and 48 philosopher profiles
- Searchable glossary of 82 key terms
- Interactive quizzes with explanations
- Spaced-repetition flashcards
- On-device audio narration
- Offline access, no network required
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Explore Western philosophy through 104 lessons arranged into 23 courses and four year-groupings. Start with philosophical questions and ancient thinkers, then move through medieval, early modern, modern and contemporary thought. Study at your own pace. START WITH 10 FREE LESSONS The first 10 lessons are free. One optional, non-subscription in-app purchase unlocks the remaining 94. The reference and practice features below are available without that purchase. FOLLOW A STRUCTURED PATH Year 1: Foundations and ancient philosophy. Year 2: Medieval and early modern philosophy, including a course on Islamic and Jewish thinkers. Year 3: Modern philosophy, from Kant to pragmatism. Year 4: Contemporary philosophy, including language, mind, ethics, political philosophy and science. READ, QUESTION AND REVIEW - 48 philosopher profiles and an 82-term glossary. - 23 practice quizzes with 319 questions and answer explanations. - 16 thought experiments and 10 branches to explore. - Spaced review of glossary terms. - Search across lessons, courses, profiles and glossary entries. - Bookmarks, personal notes and study-progress views. - Lesson read-aloud using your device's system voice. - Home Screen widgets for a daily philosophical idea, term and thinker. STUDY INTERPRETATIONS WITH REFERENCES Dedicated source cards, daily ideas and profile passages present Liminal's original paraphrases with citations. They are interpretations for study, not verbatim translations of the cited works. READ WITHOUT A CONNECTION Lesson and reference text is bundled for offline reading, subject to the lesson unlock. Buying, restoring, checking changed purchase access and opening external links may require a connection. Narration uses the voices available on your device.
ReadUnlock
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ReadUnlock turns reading aloud into screen time. Choose the apps to lock with Apple's Screen Time. Your child opens a picture book and reads it out loud: the words light up as they're said, the page turns by itself, and reading earns minutes towards the apps you chose. When the minutes are used, the apps lock again, even if ReadUnlock is closed. NEW IN 1.2 • Try one page: at the start of setup, read a real page aloud and watch the words light up. • A second language: choose the language your child reads at home and one they're learning. Tapping a word shows its meaning in the home language. • Reading friends who come alive: on Home and in the Den, Bob, Shif, Dan and Jaff breathe, fidget, do their own big move and can be picked up and played with. The reading screen stays calm. • Optional reminders: a story-time reminder (worded as a bedtime story near bedtime) and a "Time's up" message when the minutes run out. • "Read next" picks on Home, a guided first unlock, and a PIN-protected "count this page" for when listening misses a page your child really read. WHAT'S INSIDE • Real picture books: 490 illustrated books in English, Arabic, French and Spanish, from Book Dash, StoryWeaver (Pratham Books), African Storybook and Global Storybooks, from first words to longer stories, each fully credited. • A reading friend sits beside every page, cheers each page read and helps with a tricky word. • Fair by design: a page counts when 85% of it is read aloud; re-reading is good practice but earns less; unused minutes are saved. • Built for grown-ups: a PIN for every setting, a daily limit, a daily reading goal, tricky words to practice together, and protection against the app being deleted. • Private: speech is recognized on the device. Nothing is recorded, nothing about your child leaves the device, and there's no account to make. FREE AND PLUS Free: the lock, the minutes, the free books in your child's home language, and three free books to try in a second language. ReadUnlock Plus adds every book in both languages, up to four readers on one device, the Wardrobe and your friend growing as your child reads, questions after each story, a weekly report and schedules (weekend limits and bedtime). Subscriptions renew automatically unless canceled at least 24 hours before the end of the period. Manage or cancel in your Apple Account settings. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ — Privacy policy: https://readunlock.netlify.app/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: ReadUnlock at every 3 days against Liminal's every 11 days. Liminal's advantage is iOS requirement (17.0 vs 26.4). On price, ads, in-app purchases 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
Both are free to download. Liminal sells 1 one-off in-app purchase and ReadUnlock sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Liminal ships an update every 11 days, ReadUnlock every 3 days. Both last shipped on October 29, 2026.
| Parameter | Liminal | ReadUnlock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 11 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 5 MB | 47 MB |
| Age rating | 9+ | 4+ |
| Developer | OMAR DANIEL GRAZIANO | Arbaz Patel |
In-app purchases
Liminal
- Liminal Full Access$9.99
ReadUnlock
- ReadUnlock Plus Monthly$5.991 Month
- ReadUnlock Plus Annual7 Days trial$39.991 Year









