Kindle Unlimited or Amazon Prime Reading – which service is better for me?

Comparison - Kindle Unlimited vs Amazon Prime Reading

In this updated comparison, you will learn about major features, eligible books, compatible devices, offered deals, and cancellation terms.

Amazon offers so many digital services that it’s easy to get lost and confuse their names, features, and prices. Kindle Unlimited, Amazon Prime, FreeTime Unlimited, Prime Video, Audible Channels, Amazon Music Unlimited, Kindle Owners’ Lending Library…

Some of these services are standalone subscriptions; some are a part of complex membership programs. Are you sure you are choosing a service that meets your needs the most?

In this overview, we will compare two popular digital services offered by Amazon: Kindle Unlimited and Prime Reading. You will learn about major features, compatible devices, eligible books, cancellation terms, and offered deals.

Let’s start with brief definitions of each service:

Kindle Unlimited is a standalone subscription-based service that gives unlimited access to over 1 million Kindle ebooks, Audible audiobook companions, as well as digital newspapers, magazines, and comic books. The monthly fee is $9.99, and you can try it for 30 days free of charge.

⇢ More about Kindle Unlimited

Amazon Prime Reading is a part of Amazon Prime (multi-benefit subscription that costs $12.99 per month). It gives unlimited access to a rotating selection of about 1,000 hot Kindle ebooks, popular magazines, children’s books, comics, and short reads.

⇢ More about Prime Reading

At the end of the post, you will see most important features compared in a handy table, but before that, let’s compare the features and facts in detail.

Kindle Unlimited vs. Amazon Prime Reading

Subscription comparison

Both Kindle Unlimited and Prime Reading are subscription-based services, but there is one substantial difference between them:

  • Kindle Unlimited is a separate subscription service,
  • Prime Reading is a part of a larger subscription – Amazon Prime.

Therefore, comparing these two services one-to-one doesn’t make sense.

Kindle Unlimited costs $9.99 per month, and you get only this very service.

Prime Reading is not the only benefit of Amazon Prime membership. For $12.99 per month, Amazon Prime subscription offers several benefits, including:

  • Free two-day shipping to addresses in the contiguous US
  • Free same-day delivery in certain areas
  • Prime Instant Video – unlimited streaming of movies and TV shows
  • Prime Music – unlimited access to millions of songs and playlists
  • Audible channels – free access to original audio content

As you see, Prime Reading is just one of the benefits you can access – and probably not the most important one. Free two-day shipping and video streaming are the most common reasons to join Prime.

Available titles

Kindle Unlimited gives freedom to explore over 1 million Kindle books, magazines, and comics
Kindle Unlimited digital subscription gives gives access to over 1 million Kindle books, magazines, comics, and audiobook companions.

Amazon no longer provides the exact number of items in specific categories or on search results pages. However, comparing the catalogs of eligible books is quite easy.

Kindle Unlimited catalog includes over 1 million titles – it’s what Amazon claims on the sign-up page. The last time we could track the exact number (the end of 2017), more than 1.4 million items were Kindle Unlimited eligible. It’s about one-fourth of the entire Kindle Store.

Amazon Prime Reading catalog includes about 1 thousand titles. The number of eligible books seems pretty limited, but you have to keep in mind two things:

  • The list of titles is rotating
  • You can use other services included in Prime membership

Every month, new titles are added to Prime Reading – and some titles are gone. The mechanism is the same as, for instance, in Netflix. It’s worth checking out the list of eligible titles once a month to spot the newcomers.

The second thing is more important. When you are a Prime member, you can access digital books via a few services:

  • Prime Reading
  • Kindle Owners’ Lending Library (the service seems to have been discontinued, though)
  • Kindle First,
  • Audible Channels

Content details

Both services give access to similar digital content, when it comes to format and nature:

  • Kindle ebooks – some of them are in Kindle in Motion format enabling you to play embedded video, audio, or interactive elements
  • Audiobook companions – you can add an audio track, powered by Audible, to eligible books to be able to seamlessly switch between reading and listening
  • Digital magazines
  • Comic books

Both services include the same content. In other words, you won’t find in Prime Reading what’s not included in Kindle Unlimited.

The content in both services has major characteristics:

  • The majority of titles is exclusive to Kindle Store – these books are self-published via Amazon’s Kindle Direct Publishing platform or released by Amazon’s own imprints, such as Montlake, AmazonCrossing, Thomas & Mercer, or 47North
  • There are almost no books from big publishers – if you are looking for bestsellers from Random House or Simon & Schuster, you’ll be disappointed to discover most of them are not included, although you can buy them in the Kindle Store
  • A regular price of a majority of books is less than $5 – it’s good to keep it in mind when evaluating whether it pays to join each service. As the books are released in the Amazon ecosystem, their prices are much lower than bestsellers from Big 5 publishers. Regular prices of these books are usually $3.99, $4.99, or $5.99.

Eligible devices and apps

Kindle Unlimited and Prime Reading books availability
Both Kindle Unlimited and Prime Reading books can be accessed from Kindle e-readers, Fire tablets, as well as Kindle apps for iPad/iPhone and Android.

Both services can be accessed from:

  • Kindle e-reader
  • Fire tablet
  • Kindle reading app for iOS and iPadOS (iPhone and iPad)
  • Kindle reading app for Android

If you use other devices, you can browse the catalog of each service in your web browser and add your books to the device this way.

Note: You won’t be able to read magazines from the Prime Reading catalog on Kindle Cloud Reader, Kindle for Mac, and Kindle for PC.

Borrowing and returning books

If you have the Kindle e-reader or Fire tablet, you can access catalogs of both services directly and borrow eligible books seamlessly.

You can do the same using your Kindle app for iOS or Android.

In both services, there are no due dates, so you can keep the downloaded titles as long as you want.

What you need to know is that you can keep up to 10 books from each service on your connected devices or apps. If you want to borrow the 11th title, you’ll need to return one of the previously downloaded books.

Cancellation terms

In both services, when you cancel the subscription, you’ll keep the borrowed books until the next billing date.

The day after the end of the subscription, the borrowed books will be removed from your device or app the moment you connect it to the web.

You will, however, keep all the notes and highlights you’ve made. You will be able to access them online at

Price comparison

As we’ve already mentioned, comparing Kindle Unlimited with Amazon Prime is of no use, as the latter service gives many other benefits – and most of them are not related to reading.

However, let’s quickly go through fee structures to let you have an idea of how much each service will cost you.

Kindle Unlimited

The most common subscription plan of Kindle Unlimited is a monthly fee, which is $9.99. Your subscription will be automatically renewed each month until you cancel it.

If you subscribe to the service for the first time, you are eligible for a 30-day free trial, after which you’ll start paying the monthly fee.

If you cancel your subscription during the free trial, your credit card won’t be charged.

Amazon Prime

You can select from two subscription plans:

  • Monthly plan – $12.99
  • Annual plan – $119

If you pick up the annual subscription, the monthly cost will be lower: $9.92 compared to $12.99 from a monthly plan.

However, if you would like to cancel your annual plan after, let’s say, two months, you won’t get an automatic refund for the remaining period. Please keep it in mind when selecting the subscription plan.

Available deals

Amazon offers several deals throughout the year for Kindle Unlimited, and almost none for Amazon Prime.

Therefore, you can only save money on Kindle Unlimited subscription. Usually, the deals are offered for Prime Day and Black Friday & Cyber Monday. Plus, there are a few less attractive deals in the meantime.

The usual deal for Kindle Unlimited is based on longer-time subscription plans. For instance, you can save:

  • 25% on 6-month subscription – $44.95 $59.94
  • 33% on 12-month subscription – $80.32 $119.88
  • 40% on 24-month subscription – $143.85 $239.76

Some Kindle Unlimited deals will let you save even 96%, for instance, when the 3-month subscription is offered for only $0.99.

Some time ago, Amazon introduced also Kindle Unlimited extend plans that are addressed to active members. You can buy one of the long-term plans and save roughly between 20 and 40%.

When is the best time to join Kindle Unlimited? If you are not eligible for the free trial anymore, you should hunt for deals. The best deals are offered for Black Friday & Cyber Monday.

When is the best time to join Amazon Prime? It’s a few weeks before Prime Day, and a few weeks before Black Friday. You will be able to test most features during the upcoming event, while still enjoying the 30-day free trial.

Side-by-side comparison

To make things simple, we’ve put everything you wanted to know about Kindle Unlimited and Amazon Prime Reading into a comparison table.

Kindle Unlimited vs. Amazon Prime Reading – comparison table

Kindle UnlimitedPrime Reading
Part of Amazon PrimeNoYes
Number of available titles1,400,000
Kindle booksYesYes
Comic booksYesYes
Digital magazinesYesYes
Audiobook companionsYesYes
Number of books to keep simultaneously1010
Due datesNoNo
Compatible devicesKindle e-readers,
Fire tablets
Kindle e-readers,
Fire tablets
Compatible appsKindle for iOS,
Kindle for Android
Kindle for iOS,
Kindle for Android
Free trialYes,
30 days
30 days
Subscription planMonthlyMonthly,
Monthly subscription fee$9.99$12.99
Annual subscription feen.a.$119

Which service is better for me?

The difference between the two services is clear:

  • Kindle Unlimited is for avid readers
  • Amazon Prime Reading is for occasional readers

If you want to read the hottest new bestsellers released by big publishers frequently, none of these services will meet your needs.

Before joining Kindle Unlimited or Amazon Prime, make sure to explore catalogs of eligible books to find out how many books you’d want to read. You can do it without being subscribed. Simply, use the web browser on your computer:

Useful links

If you want to learn even more about two services before making the final decision which one to choose, make sure to follow these links:

All images: Amazon.

Keep reading. Here are other tips and lists for modern bookworms:

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Published by Piotr Kowalczyk

Geek and book lover who has been recently updated to the latest beta operating system which is still full of bugs. Blogger by day, designer by night. Founder of Ebook Friendly and Geek Updated.

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