Kindle Unlimited is a service that can be accessed on Kindle e-readers and smart devices with the Kindle app. Subscribers pay $11.99 per month and gain unlimited access to over a million ebooks, audiobooks, and magazines in the Kindle store. Once signed up, users can borrow and read as many ebooks as they want from the available catalog without any due dates. However, there is a limit of 20 books borrowed at a time, requiring users to return one book if they wish to borrow another. This limit does not apply to magazines.

It’s important to understand that Kindle Unlimited is separate from Amazon Prime, meaning it is not included with Prime membership. Additionally, Amazon offers a subscription to Audible, their audiobook subsidiary, starting at $7.95 per month.

The more expensive Audible Premium Plus subscription costs $14.95 per month and includes free access to titles in the Audible Plus library, discounts on select best-sellers, and a credit system allowing subscribers to claim one free title each month (Prime members receive two free titles with an Audible Premium Plus subscription). While Kindle Unlimited offers books and magazines, Audible is exclusively an audio service, though there is some overlap in content between the two subscriptions.