If you have an e-book library with books purchased from the Nook, Kobo, or Google Books apps, and you’d like to access them on your Kindle Fire, you’re in luck. There are several workarounds that will allow you to read EPUB-format books on your Kindle Fire.

Method 2: Sideloading Apps

When you successfully sideload the Nook app, your Nook books won’t show up in the Kindle Fire carousel. You will, however, be able to see all your Nook books in the reader app as well as make in-app purchases to buy new books.

Allow Installation of Third-Party Applications

Install GetJar and Download Nook

The first step is installing the GetJar app. 

Method 3: Transfer the Nook App From Another Device

While this method is a little more complicated, there are ways to transfer the Nook app you already have on another device onto your Kindle Fire. Email the app to yourself as an attachment using an account you check on your Kindle. Alternatively, download the app directly if you have the URL, use a cloud storage app such as Dropbox to transfer the app, or transfer the file to your Fire by connecting it to your computer with a USB cable. After you install Dropbox, use your computer to put the Nook APK file in a folder in Dropbox and then tap on the file on your Fire to download it. 

Read Nook Books on Your Kindle

After you install the Nook app, it’s just like any other app on your Kindle. Register the Nook app using your Barnes & Noble account. You won’t see your Nook books on your Kindle’s bookshelf, but you will see them in the Nook app. This means you can still take advantage of your Nook’s common library and bargain shop for books through any bookstore with an Android tablet app.