Support

Hit a snag? Have a suggestion? Found a typo in a 2,400-year-old lesson? Reach out — the developer reads everything.

Get in touch

Email OmarAppSupport@gmail.com — no account needed, and the developer reads everything. If you prefer a public thread, GitHub Issues works too. You don't need an issue to be a bug: feature requests, content corrections, and general questions are all welcome.

Email support Open an issue

Frequently asked

Does Liminal need an internet connection?

No. Liminal is 100% offline. Every lesson, philosopher profile, glossary entry, quiz, and thought experiment is bundled into the app at download. After installing, you can put your phone in airplane mode and never connect again — the app will keep working exactly the same.

Can I sync my progress across my iPhone and iPad?

Not at the moment. All progress, bookmarks, and notes are stored locally on each device. We chose this deliberately to keep the app fully offline and to collect no data. iCloud sync is on the roadmap — if it ships, it will be optional and end-to-end through Apple's own iCloud, not through any third-party service.

How do I add a Home Screen widget?

Long-press an empty area of your home screen until the icons jiggle, tap the + button in the top corner, then search for "Liminal". You'll see three widgets to choose from:

Quote of the Day — a rotating philosophical line.
Term of the Day — a glossary entry to learn each day.
Philosopher of the Day — a new thinker, brief intro, every morning.

Pick a size, drop it on your home screen or Lock Screen, done.

Audio narration stops when I lock my phone — how do I fix that?

Narration should keep playing with the screen locked. If it cuts out, try the following in order:

Make sure the Silent switch on the side of your iPhone is OFF (orange showing means silent).
Quit the app fully (swipe up from the App Switcher) and re-open it. The audio session sometimes needs to be re-armed.
Restart your device — if another audio app captured the session, this releases it.

If it still doesn't work, please open an issue and tell us your device + iOS version.

How does the spaced-repetition review work?

Liminal uses a simplified SM-2 algorithm (the same family Anki is built on). Each glossary term you study gets scheduled forward based on how confidently you recalled it — Again, Hard, Good, or Easy. Cards you find easy show up less often; cards you forget reset and come back sooner. There's no daily quota; review when you feel like it.

Will more lessons or philosophers be added?

Yes. Updates are free for everyone who has already purchased the app. The current 104 lessons cover a complete four-year Western philosophy curriculum, but there's plenty of ground left to cover — non-Western traditions, contemporary debates, and deeper readings of the figures already included. Suggestions are welcome.

Is there a free version?

Liminal is free to download, and the first 10 lessons are free to read — all of PHIL 1.1 and the first five lessons of PHIL 1.2. Everything else in the app is free too: all 48 philosopher profiles, the glossary, the 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 supports Family Sharing, and it restores on your other devices. There are no ads and nothing else to buy.

I want to suggest a topic, correct a typo, or report a factual error.

Please do. Philosophy is contested terrain, and any single-author summary will get some interpretations wrong. Open an issue with the lesson ID (e.g. "PHIL 1.3, lesson 2") and what you'd like changed.

How do I leave a review?

If Liminal has helped you, the most useful thing you can do is rate it on the App Store. Reviews from real readers are how new readers find us — and since there's no marketing budget, every star matters.