Comparison

Liminal vs spacerep.me

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

The philosophy degree you didn't take... in your pocket, in your own time. A four-year course of study in Western philosophy: 104 lessons from the Pre-Socratics to contemporary thought, laid out as four years of numbered courses. The first 10 lessons are free. One optional in-app purchase unlocks the remaining 94. The Curriculum Year 1 - Foundations & Ancient Philosophy (5 courses, 28 lessons) 1.1 Introduction to Philosophy; 1.2 Pre-Socratic Philosophy; 1.3 Socrates and Plato; 1.4 Aristotle; 1.5 Hellenistic & Late Antique Philosophy. Year 2 - Medieval & Early Modern Philosophy (6 courses, 26 lessons) 2.1 Augustine and Patristic Philosophy; 2.2 Islamic and Jewish Philosophy; 2.3 Scholasticism; 2.4 Renaissance and Early Modern; 2.5 Continental Rationalism; 2.6 British Empiricism. Year 3 - Modern Philosophy (5 courses, 21 lessons) 3.1 Kant's Critical Philosophy; 3.2 German Idealism; 3.3 Utilitarianism and Marx; 3.4 Schopenhauer, Kierkegaard, Nietzsche; 3.5 American Pragmatism. Year 4 - Contemporary Philosophy (7 courses, 29 lessons) 4.1 Early Analytic Philosophy; 4.2 Phenomenology and Existentialism; 4.3 Critical Theory and Postmodernism; 4.4 Philosophy of Mind; 4.5 Philosophy of Language; 4.6 Contemporary Ethics and Political Philosophy; 4.7 Philosophy of Science. What Is Included - 104 lessons across 23 courses, with short attributed passages from the primary texts - 48 philosopher profiles, from Thales to Foucault - An 82-term glossary, cross-linked from the lessons - 23 quizzes, 319 questions, each with an explanation of the answer - 16 thought experiments - 10 branches of philosophy, each linking through to the related courses, thinkers and terms - Spaced review: flashcards over the 82 glossary terms, on a schedule that stretches as you get a term right - Full-text search across lessons, courses, philosophers and glossary entries - Bookmarks and private notes - Progress tracked per year and per course - Read-aloud on any lesson, using the on-device system voice - Three home-screen widgets: Quote of the Day, Term of the Day, Philosopher of the Day What It Costs Liminal is free to download. The first 10 lessons are free - all of PHIL 1.1 and the first five lessons of PHIL 1.2 - and so is everything else in the app: all 48 philosopher profiles, the whole glossary, all 23 quizzes, the thought experiments, spaced review, search, notes and the widgets. One optional in-app purchase unlocks the remaining 94 lessons. It is a one-time purchase, not a subscription. It restores on your other devices signed in to the same Apple Account, and it supports Family Sharing. There are no ads and nothing else to buy. Scope This is Western philosophy, from the Pre-Socratics to contemporary thought. Year 2 runs from the Church Fathers to the early moderns and gives Islamic and Jewish philosophy a course of its own: Avicenna, Averroes, Al-Ghazali and Maimonides alongside Augustine and Aquinas. The curriculum does not cover Eastern or Asian traditions. There is no video, no discussion feed and no cloud sync. Your progress lives on the device you read on. Privacy Liminal has no servers of its own. There is no sign-in, no analytics, no advertising identifier and no tracking, and nothing you do is uploaded. Your progress, bookmarks, notes and review schedule are stored in a database on your device. Every lesson, quiz and profile is already installed, so the app reads the same in Airplane Mode; the only network use is Apple's own, when you buy or restore the unlock. Support: https://omardgraz.github.io/Liminal-Support/support.html Privacy policy: https://omardgraz.github.io/Liminal-Support/privacy.html

About

spacerep.me

Features
Read full description

SpaceRep is a modern flashcard app designed for efficient learning using spaced repetition. Create decks and cards, review exactly what you need to learn right now, and retain knowledge long-term. SpaceRep uses FSRS, a modern review algorithm that schedules your study intervals more intelligently than traditional fixed-interval flashcard systems. Features: - Create flashcards and decks - Spaced repetition with FSRS - Cross-device synchronization - Rich text content for structured cards - Import existing content - Dark and light themes - Focus on a clear, distraction-free learning routine SpaceRep is ideal for college, school, languages, exams, professional development, and any topics you want to retain long-term.

Screenshots

Liminal4 screens
spacerep.me4 screens

Verdict

The call

The clearest difference is in-app purchases: spacerep.me at none against Liminal's 1. Liminal's advantage is update cadence (every 10 days vs every 4 weeks). On price, ads, device support and iOS requirement 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. Liminal sells 1 one-off in-app purchase. spacerep.me asks for nothing beyond the download.

UpkeepUpdate frequency

Liminal ships an update every 10 days, spacerep.me every 4 weeks. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
Liminal versus spacerep.me: the parameters behind the verdict, then further details
ParameterLiminalspacerep.me
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 10 days — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size3 MB52 MB
Age rating9+4+
DeveloperOMAR DANIEL GRAZIANOChristoph Manhart

In-app purchases

1 purchases

Liminal

One-time1
  • Liminal Full Access$9.99
None

spacerep.me

No in-app purchases

Questions

Is Liminal free?
Liminal is free to download, with in-app purchases available.
Is spacerep.me free?
spacerep.me is free to download, with no in-app purchases.
Do Liminal or spacerep.me have ads?
Neither Liminal nor spacerep.me shows ads.
Which is updated more often, Liminal or spacerep.me?
Liminal ships an update every 10 days, and spacerep.me every 4 weeks. Most recently, Liminal was updated on October 13, 2026 and spacerep.me on October 10, 2026.

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