Read the big idea, not the whole book.

What you get

• 1,462 nonfiction summaries, from business and psychology to health and history.
• Narrated audio on every spark, not just the popular titles.
• Background playback with lock screen controls, so audio continues when you leave the app.
• Highlights, so the lines worth keeping stay somewhere you can find them.
• Progress that syncs across your devices, whether you were reading or listening.
• One book unlocked in full every day, rotating at midnight.

How it works

Each book is split into sparks. A spark is one idea, start to finish — not a chapter heading with a sentence under it. Read one in about fifteen minutes, or listen to a whole book in about forty. Start on the train, switch to audio while you cook, and pick up where you left off.