| What it does | Stop forgetting what you read.
| Personality, With a Little Character
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| Stage | Not given
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| Founded | Not given
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| Based in | HR
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| Pricing model | Freemium
| Paid
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| Pricing | First book free. Kern Plus subscription (monthly or yearly) unlocks unlimited books, or single-book one-time purchases available.
| Free result included with all tests. Detailed report: $2.99 one-time purchase, no subscription.
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| Key features | - Flashcards generated from book titles without highlights or uploads
- Spaced repetition across all books in one interleaved feed
- Four card types: quick check, fill the blank, explain simply, myth buster
- Home Screen widget for answering cards without opening the app
- Wall widget showing how fresh each book is
- Lock Screen widgets showing which book is fading next
- Reminders at your chosen quiet time, only on days you haven't reviewed
- No account required, reviews work fully offline
- Works with paper books, Kindle, audiobooks and library copies
- Cards written in Kern's own words, not excerpts from books
| - Big Five questionnaire with 50 questions in 6-8 minutes exploring five personality dimensions
- 16-Type test with 32 questions in 4-6 minutes examining preference pairs and habits
- Enneagram questionnaire with 36 questions in 5-7 minutes reflecting on motivation patterns
- Free instant character card and personality label without account or payment
- Original AI-assisted geometric illustrations and character nicknames in results
- Private report links with email delivery option
- Public share links showing only character name and quote
- Results saved for 30 days in browser without login
- Visible scoring methodology documentation
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| What makes it different | - No account, sign-up or email capture required
- Works for books without highlights, uploads or notes
- Covers audiobooks and library copies that other retention tools cannot handle
| - No subscription or account required for free results
- Results are deterministic and not processed through AI language models
- Independent project with original questionnaires and character assets
- Transparent about limitations and does not invent endorsements or success rates
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 14 ▲ +1 (up) since last check | 2 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 3 | 2 |
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| Citation Flow (Majestic) | 21 | 23 |
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| Referring domains (Majestic) | 23 | 14 |
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Kern
Big 5 Test