UK Phantom

Startups Scribd and Oyster both offer better value for avid readers of popular books.

Though Oyster has only 500,000 books and Scribd has 400,000, both offer extensive libraries from two of the largest publishers, HarperCollins and Simon & Schuster. Kindle Unlimited doesn’t.

Kindle Unlimited and Oyster both cost $10 a month, while Scribd goes for $9. All three offer the first month free.

Weeks ago, as I was reviewing Scribd and Oyster, I asked colleagues to suggest books that ought to be on such services. I also added titles from my own wish list. Of the 75 I checked, Oyster had 17 and Scribd had 16. That’s not a lot. I got even fewer with Kindle Unlimited — six matches, plus one that’s free for everyone.

But through Amazon’s $99-per-year Prime program, I could already read four of those six books for free on Kindle devices. Only "Silent Spring" by Rachel Carson and "Flash Boys" by Michael Lewis require the Kindle Unlimited subscription.

Under Prime, however, I can read only one book a month. Kindle Unlimited lets you download 10 books at a time on up to six devices. Those devices don’t have to be Amazon devices, as Prime requires.

Kindle Unlimited also beats its rivals in several ways:

• It has 2,000 audiobooks from Amazon’s Audible business. They’re synchronized to the corresponding books, so if you need to break off reading to drive, you can have the audiobook play instead, starting where you left off reading.