Side by side
Here, or on Apple Books.
The same book, two separate purchases. Everything built around the book, the online reader, the six highlight colours, the notes and bookmarks, the post lab and the account that keeps them, exists here and only here; Apple Books gets the same words in the Books app. This is what each one is. You picked buying here; that side is lit.
| thexalgorithmbook.com | Apple Books | |
|---|---|---|
| Price | $24.99, one time | $31.99, one time |
| Where you read | The online reader, in any browser on any device. Also an EPUB for Apple Books, Kindle, Kobo, or any reader app. | The Books app on iPhone, iPad, and Mac. |
| The post lab | Included. Good post against bad post, a reply thread played out, a checker for your own draft, and this month's examples, all built from the book's own Chapter 2 and updated with each drop. | Not included. It runs on this site, inside your account. |
| Highlights, notes, bookmarks | Six highlight colors, a note on any highlight, a bookmark on any page, all listed in one panel, all private, and they carry over to the next drop. | The Books app's own highlights and notes. |
| Your place | Remembered across every device and browser you sign in on. | Remembered by the Books app across your Apple devices. |
| Your EPUB | Your own EPUB, with your name on the copyright page, replaced with each drop. It opens in Apple Books, Kindle, Kobo, or any reader app. | No EPUB. Apple's copy stays in your Books library, in the Books app. |
| Drops | Twelve months of drops from the day you buy. After that you keep the last drop you received; $19.99 adds twelve more months whenever you like. Nothing renews on its own. | Every drop for as long as the book is listed on Apple Books. |
| How a drop arrives | The online book becomes the new drop by itself on the 25th; the EPUB is replaced; an email says what changed. | Apple updates the book in your library and shows the "What's new" notes. |
| Payment | Card, through Stripe. The card never touches this site. | Your Apple payment method. |
| Refunds | The sale is final once the book has been opened. If it will not open at all, write within 14 days and it is fixed or refunded. | Apple's refund policy, at reportaproblem.apple.com. |
| The license | One license, one reader, accepted by name before the first read. Your EPUB carries your name and a copy identifier; sharing closes the account. | Apple's terms, and Apple's copy protection. |
| What one does not include | The Apple Books edition. | An account here, the online reader, your own EPUB, the reading tools, and the post lab. |
| If somebody recommended it to you | Buying here pays them $1 a sale, at no cost to you, and your price is the same either way. It is how people who pass the book on get something back for it. | Pays them nothing. Apple does not tell a publisher where a buyer came from, so there is no way to know who sent you, and nothing can be paid on a guess. |
| Help | The contact form, answered by email. | Apple Support for the purchase; the contact form for the book itself. |
| Buy on Apple Books, $31.99 |