Browse all the topics.

Each topic gathers the key ideas of the best books, so you can progress without scattering yourself.

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The essentials for the curious

  • Summary articles freely available on our blog
  • Highlighted concepts to get to the point
  • About 8 minutes per read
  • New titles regularly
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The full power of Cobalt

  • All books and all summaries in the app
  • Summary length adjustable in real time
  • Offline mode: learn anywhere
  • Personalized recommendations
  • All new features, without limits
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Your questions.
our answers.

What is a topic on Cobalt?

A topic gathers the key ideas of several books around one theme: habits, productivity, psychology... It is the fastest way to explore a field without picking a random book.

Can a book belong to several topics?

Yes. Atomic Habits, for example, sheds light on habits as much as on productivity or time management. Each topic only keeps the books that truly bring it something.

How do I read the full summary of a book?

Each idea card links to the full summary of the book on the site, freely accessible. The Cobalt app additionally offers adjustable summaries and offline mode.

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