Coming soon

Every book you own, on every screen you read.

Particle Reader is an offline-first EPUB and PDF reader. Manage your library, sync your progress, highlights and bookmarks, track your reading habits and much more. Coming soon to iOS, Android and the web.

The Particle library on a phone

The reader

Tune the page to your eyes.

Typeface, size, spacing, margins, theme. Set it once, or book by book — either way, Particle remembers.

Text
Font, size, line height, word and letter spacing
Page
Columns, alignment, margins, hyphenation, light / sepia / dark
Themes
Save a set of settings and reuse it in any book
Reader settings open over a book

Highlights & notes

Highlights, notes and bookmarks.

Highlight in colour, attach a note, drop a bookmark.

Highlight
In colour, with a note attached
Bookmark
Anywhere in the book
A highlighted passage in the reader

Sync

Stop on one screen. Continue on the next.

Your place, highlights, notes, and settings move with you — phone to e-ink to browser and back. Offline-first: nothing waits on a network, and nothing is lost without one.

The same book on an e-ink tablet
The same book on an iPhone
The same book on an Android phone

Integrations

Works with the tools you already use.

calibre

One-way sync of your calibre library into Particle — books plus title, author, series, ISBN and cover. Nothing is written back, and nothing is deleted behind your back.

KOReader

Browse and download your library on Kobo, Kindle, PocketBook, reMarkable and more. Positions, highlights and bookmarks sync both ways.

Statistics

Watch a habit form.

Reading time, words and pages, speed, sessions and streaks — across the whole library, and again for every book on its own. Quietly counted while you read.

Time
Reading time, sessions, average length
Volume
Words, pages turned, words per minute
Streaks
Current and longest
Range
Week, month, year, or all time
Scope
Your whole library, or one book on its own
Reading statistics across the library
Daily readingmost in a day 1h 44m

Your library

Shelves, authors, series.

Group your library by bookshelf, author or series — or leave it flat. Filter by reading status, format or tag, and sort by title, author, date added or progress.

Group by
Bookshelves, author, series, or nothing
Filter
Reading status, format, tags
Sort
Recent, date added, title, author, progress
A bookshelf of books

E Ink

Optimized for e-ink.

Animations off, high-contrast controls, no grey. Highlight colours and page themes render in black and white, and the volume keys turn pages.

Rendering
High contrast, animation off
Colour
Highlights and page themes in black and white
Buttons
Physical page-turn keys mapped
The library on an e-ink tablet

Start reading.

One library, on every device you read with.

Coming soon to iOS, Android and the web

Interested in testing? Drop us a message at hello@particle-reader.com