Ebook subscriptions compared

“Ebook subscription” covers at least three different products. One lends you a fixed number of titles at a time. One sells you a set number of unlocks a month. One is your library, and costs nothing. Choosing well means picking the model before picking the brand.

The three models

Borrow-a-catalog. You take titles from a defined pool and hold a limited number at once. Kindle Unlimited works this way: Amazon's help page states you can “borrow up to 20 titles at a time from a wide selection of genres, all with no due dates”, and that magazine issues count toward the same limit. Nothing becomes yours, and access ends with the membership.

Monthly unlocks. You get a small number of choices a month from the whole store, plus open access to a smaller pool. Everand is the main example: its own page, read on 13 August 2026, described 1 unlock a month on Standard, 3 on Plus and 5 on Deluxe, from $11.99 a month after trial, alongside unlimited access to a pool it put at 20k+ audiobooks, ebooks and podcasts.

Library lending. Your library licenses copies and you borrow them. Free, current, and the model that carries the books the other two do not.

What each one is actually good at

The catalog question, which people get backwards

Nobody should choose one of these on catalog size, and mostly nobody can: Amazon publishes no verifiable figure and states its catalog changes at any time. What matters is whether the specific books you want are in the specific service.

The pattern that decides it is publishing type. Independent publishing fills subscription catalogs, because paying by pages read suits authors who publish in series at pace. Traditional publishing mostly does not, because it has no reason to. So a reader of independent romance, fantasy or cozy mystery is served extremely well — see romance on Kindle Unlimited and fantasy on Kindle Unlimited — while a reader of prize-list non-fiction is served badly, as non-fiction on Kindle Unlimited says plainly.

The free one, again

Your library covers exactly the half these subscriptions miss. Libby's own help page puts the requirement at “all you need is a library card”, and the catalog is current commercial publishing. The cost is waiting: popular titles have holds.

Which means the honest sequencing is library first, subscription second, and only for the gap the library leaves. That gap is real for some readers and nonexistent for others, and Kindle Unlimited versus Libby works through which you are. We earn nothing when the answer is the library, which is rather the point of publishing it.

The five-book test

Write down five books you actually want to read next. Check each one in each service you are considering, and check your library at the same time. Whichever has four of the five is your answer, and the exercise takes about ten minutes. The method for the Amazon side is on how to check what is in the catalog.