Kernel

Chapter summaries, read aloud

USD 0.99

Chapter summaries of the books you read. You finish a book and a month later you remember one idea. Kernel keeps the rest. Every chapter, in plain words, readable in a minute. Open a book and see its chapters. Open a chapter and read it, or press Listen and hear it explained by two hosts while each word lights up as it is read. Your summaries are yours. They live in your account, sync across iPhone, iPad, Mac and the web, and deleting your account deletes all of it. Sign in with Apple or email. Share any summary with a link.

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Bookrank is now Kernel. A new gold look and our own typeface, a short welcome for first-time readers, and one narrator who explains each chapter. After you update, sign in once. If you use email, reset your password once.

The developer, Joshua Trommel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Joshua Trommel
    Size
    8.6 MB
    Category
    Books
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Joshua Trommel