# Twenty Razors

> Twenty Razors (iPhone/iPad app by Lukas Lundberg.)

- Source: https://appshunter.io/ios/app/twenty-razors/id6756750757 (this page in markdown: same URL + `.md`)
- Developer: [Lukas Lundberg](https://appshunter.io/developer/890248270)
- Category: Education
- Price: $1.99
- Age rating: 4+
- Requires: iOS 13.0 · 54 MB
- Languages: English
- Released: 2025-12-22
- Data updated: 2026-06-10
- User reviews in markdown: https://appshunter.io/ios/app/twenty-razors/id6756750757/reviews.md

## What is Twenty Razors?

Twenty Razors is a philosophy education app featuring profiles of 20 influential thinkers.

Each thinker profile includes:
- Biography and historical context
- Core ideas and key concepts
- Known blindspots and criticisms
- A practical "razor" test to apply their thinking

Thinkers include: Socrates, Machiavelli, Kant, Adam Smith, Marx, Hayek, Keynes, Friedman, Sowell, Popper, Arendt, Foucault, Girard, Kahneman, Taleb, Haidt, Henrich, Caplan, and Henderson.

Features:
- Concept Cards explaining key philosophical ideas
- Quizzes to test your understanding
- Works offline
- No ads or tracking


## Version history (last 1 release)

### 1.0 — 2025-12-22

No release notes.

## More apps by Lukas Lundberg

- [Arthurian Legends](https://appshunter.io/ios/app/arthurian-legends/id6746692452)

All apps by Lukas Lundberg: https://appshunter.io/developer/890248270

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*