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Study Smarter With Your Own AI Tutor

Ask questions, get instant answers, quiz yourself, and have any textbook read aloud — all powered by AI that actually understands what you're reading.

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📚 100+ Free Textbooks
🤖 Powered by Claude AI
🎙️ Read Aloud with Custom Voices
✅ Cancel Anytime
What You Get

Everything a student needs to actually learn

Stop rereading the same paragraph five times. Our AI reads with you and makes sure you understand.

💬

Ask Anything

Ask the AI questions about any chapter and get clear, concise answers — like having a tutor available 24/7 who has read the book for you.

AI Chat
🎙️

Read Aloud

Have any chapter read to you in a natural voice. Choose from multiple voices and adjust the speed. Perfect for commutes, workouts, or tired eyes.

Voice Reading
🧠

Quiz Yourself

After reading, test your knowledge with AI-generated quizzes. Active recall is proven to dramatically improve long-term retention.

Active Recall
📋

Instant Summaries

Get a concise, accurate summary of any chapter in seconds. Great for reviewing before exams or getting the gist before diving deep.

AI Summary
📚

Full Chapter Access

Unlock every chapter of every book in our library — not just the free preview. Read as much as you want, whenever you want.

Unlimited Access
💡

Concept Explanations

Struggling with a concept? Ask the AI to explain it differently — with analogies, examples, or in simpler language until it clicks.

AI Tutor
How It Works

From confused to confident in minutes

No downloads, no setup. Just open a book and start learning smarter.

1

Pick a Book

Browse our library of 100+ free, legally open textbooks across every major subject.

2

Open the AI Reader

Click "Read with AI" to open the chapter in our smart reading environment.

3

Ask, Listen, Quiz

Chat with the AI, have it read to you, test yourself — all in one place.

4

Ace the Exam

Walk into your test actually understanding the material, not just hoping for the best.

Pricing

One simple price. Everything included.

1-Day Free Trial
$7.99
per month · cancel anytime
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Just want to browse? Explore the free library →

Common questions

Are the textbooks actually free and legal?
Yes — all books in our library are Open Educational Resources (OER) licensed under Creative Commons. They are peer-reviewed, legally free, and many are used in universities worldwide. The premium subscription covers the AI features built on top of them, not the books themselves.
What subjects are available?
Psychology, Biology, Chemistry, Physics, History, Economics, Philosophy, Law, Mathematics, Literature, and more — with new books added regularly.
How does the AI know about the book I'm reading?
Our AI reads the specific chapter you're on before answering your questions. It doesn't give generic answers — it responds based on the actual content in front of you, just like a tutor who has read the same page.
Can I cancel anytime?
Yes — cancel with one click, no questions asked. You keep access until the end of your billing period.
Do I need to download anything?
No. Books4Free works entirely in your browser on any device — phone, tablet, or desktop.

Your textbooks just got a whole lot smarter

Join students who are actually understanding their coursework — not just reading it.

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