The Kindle Fire is a specialized Amazon e-book reader that runs on Android. The Fire uses its own .mobi format and Adobe PDFs, but does not automatically read books in the EPUB format used by Nook, Kobo, and Google Books.

If you have an eBook library of books you’ve purchased through the Nook, Kobo, or Google Books apps and you want to access them on your Kindle Fire, you’re in luck. There are several solutions that will allow you to read books in EPUB format on your Kindle Fire.

While Amazon’s App Store doesn’t offer apps from competing bookstores like Nook or Kobo, it does offer third-party reading apps. One of the most popular is Aldiko Book Reader. This app has a free version and a $2.99 premium version that supports EPUB and PDF formats, as well as Adobe DRM-encrypted e-books.

While you do have to take the extra step of getting your non-Amazon books onto your Kindle, an Amazon-approved third-party book reader is an easy solution.