Sell books with World of Books

4.1
1.27K reviews
Content rating
Everyone
500K+
Downloads
Content rating
Everyone
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

The Sell books with World of Books app makes it easy to earn extra money and declutter your home. Download the free app (previously known as Ziffit) to turn your used books and textbooks into cash.

• Sell books or textbooks instantly.
• Scan barcodes with your phone or tablet
• Get an instant quote and complete your trade.
• Ship your books for free with FedEx or USPS.
• Receive quick payments directly to your bank or PayPal account.

With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.

Curious about the value of your book collection? The app can tell you that, too.

The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
Updated on
Apr 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info, Financial info and 2 others
This app may collect these data types
Personal info, Financial info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.1
1.25K reviews
Beskrock
March 22, 2026
The scan accuracy and efficiency could use some work but if you've been holding onto CDs, books, DVDs and what not and need to make room, why not exchange them for some money? I like the shelf aspect of the app because you can use it to see if it's time to go through your things again.
4 people found this review helpful
Did you find this helpful?
Victoria Munoz
November 6, 2025
Could be better. Very low payments. 1st trade was supposed to be $100 something but I only received $80 something. Kinda just brushed it off and didn't pay attention to the situation. Next My $11 trade dropped to $7. The amount of books dropped from 40 to 36. Was told by customer service/Bot "our terms dont allow us to take pictures to show damage, and we do not send books back" they keep your books and lower prices after receiving. Horrible service Horrible app. Good idea played out wrong.
189 people found this review helpful
Did you find this helpful?
Bob Keller
October 22, 2025
This replaces my earlier comment. I apparently misunderstood the instructions for multiple boxes. But I am still uneasy with the one sided structure. The seller bears all the risk; the buyer has none. If the seller unilaterally claims an item is damaged or in substandard condition, there is no loss to the buyer. He does not pay and has no obligation to return the item. OTOH if the buyer's claim is erroneous, the seller loses both item and payment with no recourse.
119 people found this review helpful
Did you find this helpful?

What’s new

We've updated the app with some new features and improved stability and performance.