Amazon is offering their Prime members 3 Months of Kindle Unlimited services for FREE (regularly $9.99/month) for a limited time. This deal is valid for new and previous Kindle Unlimited members and is valid till July 31, 2019, 11:59 PM PST.
With the Kindle Unlimited subscription, you can access hundreds of thousands of Kindle books and thousands of audiobooks with Whispersync for Voice. You can keep up to ten books at a time and there are no due dates. Read your Kindle Unlimited books on any Amazon device, or free Kindle reading app.