Practice · Make ideas stick

Turn what you read into something you remember

Quizzes, challenges, riddles, and quick hits — free ways to practice the ideas from books (the part Blinkist and ChatGPT skip).

Pick your practice

Tap anything. Takes a minute. Keeps the ideas alive.

3 tough questions. 15 seconds each. Finish for a shot at a $100 Amazon gift card.

One new riddle a day. Solve it — and enter for a chance to win $100.

Surprising facts in card form. Fresh set every day.

Big book ideas in bite-size videos. Perfect between meetings.

Big ideas, one glance. Visual summaries you can actually remember.

Key ideas from top books, drawn so they stick at a glance.

A few questions → a personalized next book for you.

Share Sumizeit and earn 25% on every upgrade they make.

Free to take. Instant results. Surprisingly addictive.

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