Margin: highlight on the go

Photograph a page of any paper book and keep the passage. Everything you save collects in one place, searchable, and syncs across your devices.

Margin is where what you read goes when you're done reading it.

Most of what survives a book isn't its plot — it's the sentence you underlined and half-forgot. In a paper book, that sentence stays trapped on the page. Margin gets it out.

CAPTURE FROM PAPER Photograph a page and Margin reads the text off the photo, so you can keep a passage from a physical book without typing it out. Everything happens on your device.

EVERYTHING IN ONE PLACE Every highlight, note, and passage you save collects in Marginalia — one feed across your whole library, searchable by passage, note, title, or author. Filter to just highlights or just notes, or group by book.

TRACK WHAT YOU'RE READING Keep your library organized by what you're reading, what you've finished, and what's next. Group books into collections. Set a yearly reading goal and build a reading streak.

READ PDFS AND EPUBS Import your own PDFs and EPUBs and read them in the app, with highlights and notes saved alongside everything else.

YOURS, AND PRIVATE There is no account and no sign-up. Your library lives on your device and syncs through your own iCloud, so it follows you to a new phone. Nothing is stored on our servers — we can't see your books or your notes.

FREE, WITH NO CATCH Every feature is included. No subscription, no paywall, no ads.

An optional AI reading companion is available if you supply your own OpenAI API key. It stays off until you do.