The most important ~10–15% of the world's best books — built to stick.
Each summary distills a book down to the ideas that actually matter, then helps you lock them in with quick quizzes. You finish in a fraction of the time — and you actually remember it.
14 books summarized · new titles added regularly
Why a focused summary + a quiz beats skimming a whole book
Reading cover-to-cover feels productive, but most of it fades within days. Decades of learning research point to a better way to remember: get the core ideas, then actively recall them.
Signal, not noise
We keep the ~10–15% that carries the book's argument — the key ideas, the best stories, the takeaways — and cut the padding.
Active recall
A short quiz after each chapter makes your brain retrieve what it just learned — the testing effect, one of the most reliable ways to make knowledge stick.
A book's worth in under an hour
Get the value of a 10-hour book in about an hour — and keep more of it than you would after the full read.
How it works
Read the summary
The core ideas of the book, chapter by chapter — that's the heart of it.
Test yourself (optional)
A quick optional quiz helps the ideas stick — and earns you points and streaks.
Track your growth
Highlights, reading progress, badges and a leaderboard keep you coming back.
Fresh on the shelf
See all →Think and Grow Rich
Napoleon Hill
Zero to One: Notes on Startups, or How to Build the Future
Peter Thiel
Thinking, Fast and Slow
Daniel Kahneman
The Simple Path to Wealth
JL Collins
The Psychology of Money
Morgan Housel
The Let Them Theory: Why Giving Up Control Will Get You Everything You Want
Mel Robbins
The Intelligent Investor
Benjamin Graham
The Automatic Millionaire
David Bach
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