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Learn 50% more from every book you read.

With Siori, build a consistent reading habit, quiz what you've learned, remember more in the long term and grow lasting knowledge.

Start Learning
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Did you know?

You forget 80% of what you read within a week.

Even the best books fade fast. Without reinforcement, your brain naturally forgets most of what you read, often within days.

The good news?

Studies show that readers who take a short quiz after reading retain 33–50% more.

These aren't shortcuts. They're science-backed techniques proven to boost long-term learning.

Retention Over 4 Weeks
Reading vs Reading + Quizzes

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Want to actually remember what you read?

Read smarter. Remember longer.

Try Siori For Free

Backed by Science.
Built for Readers.

Siori is based on decades of research into how people actually learn and remember. Here's what makes it so effective:

Quiz After
Each Chapter

Short quizzes after each chapter help you lock in key ideas, boosting retention by up to 50%, more effective than re-reading or highlighting.

Final Book Test
 

Revisit key concepts once you've finished the book. This spaced repetition strengthens long-term memory and understanding.

Immediate
Feedback

Know right away if you're right or wrong, and why. Immediate feedback helps your brain retain 10–20% more.

Consistent Reading,
Tracking & Rewards

Track your reading and earn rewards as you go. Small wins build consistency, and consistent reading leads to real learning.

Turn every book into a
learning experience.

Here's how Siori helps you retain more, one chapter at a time:

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• Pick a Book, Start Reading.

Choose from a growing library of popular nonfiction titles. Can't find one? Request it.

• Read & Track Your Progress

Read at your own pace, using a paper book or e-book. Siori tracks your reading time, shows your stats, and rewards your consistency.

• Finish a Chapter, Take a Quick Quiz

After each chapter, take a short quiz to lock in what you've learned. It only takes a minute, but boosts your retention dramatically.

• Get Certified

Once you've completed all the chapters, take the final test. Pass it to earn a certificate, proof you've learned, not just read.

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You've seen how it works.
Now try it for yourself.

Don't just read. Learn deeply.

Try Siori For Free

Learn better from the Books you already love.

Siori works with top nonfiction books in productivity, psychology, business, self-development, and more. We're adding new titles every week.

Explore More

Got Questions?
We've Got You Covered.

You can easily request it! We're adding new books every week, and prioritize titles requested by readers. Reading tracking works for any book you read.

You can easily request it! We're adding new books every week, and prioritize titles requested by readers. Reading tracking works for any book you read.

You can easily request it! We're adding new books every week, and prioritize titles requested by readers. Reading tracking works for any book you read.

You can easily request it! We're adding new books every week, and prioritize titles requested by readers. Reading tracking works for any book you read.

You can easily request it! We're adding new books every week, and prioritize titles requested by readers. Reading tracking works for any book you read.

You can easily request it! We're adding new books every week, and prioritize titles requested by readers. Reading tracking works for any book you read.

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Ready to get more from every book you read?

Join a community of readers who are turning pages into knowledge.