Linemark
Snap the pages you marked.
Snap the pages you highlighted. Linemark finds the marked lines and shows them to you again on a spaced-repetition schedule, a few minutes a day.
On the way to the App Store

Why it exists
“Keep the lines you highlight.”
Why Linemark exists
What’s in Linemark
Free for 3 books, with page scans, reviews, reminders, iCloud sync and Markdown export.
- Snap the pages you marked in a paper book. Linemark finds the highlighted lines and completes them to whole sentences instead of fragments, with the page number
- Highlighter over the letters or drawn underneath, like a thick underline
- Missed a line? Pick it yourself
- Scan several pages with the document camera, or choose up to 10 photos
- Spaced repetition (FSRS-5): each highlight comes back days later, then at longer gaps as you rate it
- Today shows what’s due, about how long it takes, and the week ahead
- One reminder a day at your time, only on days something is waiting
- Find a book by title, author or ISBN, or scan the barcode on the back
- Export a book’s highlights as Markdown, with page numbers and your notes, for any notes app
- Sync through your own private iCloud, or keep it on this iPhone
- Linemark Pro, one purchase, no subscription: unlimited books, Kindle import of the highlights and notes in your Kindle’s My Clippings.txt (English, Turkish, Spanish and Portuguese Kindles), crop diagrams and tables from a page, and export your whole library as Markdown
- Pages are read on your iPhone. No ads, no tracking. Book search uses Open Library
- For iPhone, iOS 18 or later
The real thing.
Linemark’s App Store screenshots, from the app as it is today.

Snap the pages you marked

Whole sentences, not fragments

What’s due today

A few minutes a day

Every book you’re reading

Your highlights, as Markdown