Local-first e-book readerOn-device AI when available

Read on.
Get the context.

A calm, customizable EPUB and FB2 reader for macOS.

Import EPUB and FB2 books from your Mac. Shape the type, spacing, theme, and page layout to fit each book. Your library and reading place stay on this Mac. On supported Macs, use on-device AI to explain or translate a selected passage.

Mac App Store version 0.1.0 · review in progress

The direct macOS download is available while the App Store version is in review.

Reader: macOS 13+ · On-device AI: macOS 26+, a supported Mac, and Apple Intelligence availability

Syllory displaying a two-page spread with paragraph spacing and reading controls

01 · Local AI

Make sense of a whole paragraph.
Translate it in context.

Select a word, sentence, or full paragraph in the reader. Ask Syllory to explain the passage as a whole, or choose from 32 translation language options and translate with the surrounding text in mind.

Runs with Apple Foundation Models when Apple Intelligence is available on a supported Mac with macOS 26 or later.

✦Ask Syllory×

“The handwriting leaned sharply to the right, with careful loops around each name. Most people had come to borrow a book. A few had asked for a map, a quiet chair, or simply a place to sit until the rain stopped.”

✦ Explain
文 Translate to Spanish⌄
文 Translate in Context
Select a complete paragraphExplain its meaning or choose a target language.
✦Ask Syllory×
Explanation

The careful handwriting makes the ledger feel personal and preserved. People came to the library for more than books: they also needed guidance, quiet, or a place to wait out the rain.

✦ Apple Foundation Models · On-device
Get an explanation in contextThe selected passage and nearby text stay on this Mac.

02 Made for the way you read

Your books stay in a local library, with a separate reading place and page setup for each title.

▤

Your library, on your Mac

Import EPUB or FB2 files from your own collection. Your place and reading settings are saved for each book, with no in-app store, account, or cloud sync.

Aa

A page that feels right

Choose a typeface and size, tune paragraph spacing from minimal to relaxed, adjust line spacing, and switch between one or two pages.

◉

Four quiet themes

Move between Light, Sepia, Midnight, and Mint across the library and the reading view.

03 Settle into your own rhythm

Keep the book at the centre. Reading controls fade out of the way, then return when you move the pointer.

Reading layout

One page, or an open spread.

Use a single page when you want a narrow, quiet column. Choose two pages for the feeling of an open book. The layout adapts as the window changes size.

Single page
Two pages
TypefaceIowan Old Style
Text size22 px
SpacingMinimal by default · Both adjustable
Reading themeChoose for this book

04 Your library, your place

Keep track of what's in progress and return to the saved place in any book.

Syllory library with an original sample book and saved reading progress
Your library, with progress at a glanceApp screenshot
Syllory reader showing an original two-page sample with paragraph spacing and reading controls
A two-page spread with adjustable spacingApp screenshot

05 Learn a language as you read.

A direction we're exploring: read the original beside an AI translation, then select a word on either page to find its match and understand it in context.

Illustrative concept for a future Syllory language study view: an English book page beside its Spanish AI translation, with the selected words quiet and tranquilo linked and explained in context
CONCEPT · NOT IN THE CURRENT APPOriginal on the left. Translation on the right. Select either word to follow its meaning across both pages.Open full size ↗

06 · Private by design

Your reading stays yours.

Imported books, reading position, and preferences stay in the local library on this Mac. When Apple Intelligence is available on a supported Mac running macOS 26 or later, selected text and nearby context are processed by Apple’s on-device Foundation Models. Syllory does not send them to its own server.

01 No in-app book store
02 Local book library
03 On-device help when supported