Book+ App vs Underline

Book+ helps you save the quotes you find while reading, organize them by book and page, and return to them whenever you want. Add quotes manually or extract text from the camera or from a saved image. Save the book title, author, page, and ISBN, and build a private quote library organized by book. Browse your books, edit quotes and copy quotes with their reference Book+ works without an account, subscription, or purchase. Your data stays on your device and is not shared with external services.

You underline a line in a book. You copy it into a notebook. Then the notebook stays at home, exactly when you want to find that passage again. Underline is your personal quote notebook for the printed books you read. Save the lines you underline, keep them organized by book and page, and find any of them in seconds, wherever you are. SAVE A PASSAGE IN SECONDS • Point your camera at the page. Text is recognized right on your device • Tap to select just the sentences you want, then save • Prefer typing? Add any quote manually • Add the page number, a personal note and tags BUILD YOUR BOOKSHELF • Add books by scanning the ISBN barcode or searching by title or author • Every quote is kept with its book, author and page • Mark favorites to keep your most loved lines one tap away FIND ANY LINE, ANYWHERE • Full-text search across every quote and note • Filter by book, tag or favorites • Your reading notes travel with you, no paper notebook required SHARE THE WORDS YOU LOVE • Turn a quote into a clean, beautiful card • Share it to Instagram Stories, messages or anywhere else YOUR DATA, YOUR FILES • Back up your whole library to a single .underline file and restore it anytime • Export to CSV or Markdown, ready for Notion, Obsidian or a spreadsheet PRIVATE BY DESIGN • No account, no sign-up • Your quotes are stored on your device, not on our servers • Works offline. The internet is only used when you look up a book Text recognition works with Latin-alphabet languages (English, Spanish, French, German, Italian, Portuguese, Turkish and more), plus Russian, Arabic and Japanese. Handwriting is not supported. UNDERLINE PRO (OPTIONAL) • No ads • Every quote card style, PDF export of a book's quotes and full reading insights • Monthly or yearly subscription (the yearly plan starts with a free trial), or a one-time lifetime purchase • Your books and quotes stay free and unlimited without Pro Underline is free to download. Start your quote journal with the book on your nightstand. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel them in your App Store account settings. Terms of Use: https://zaustudios.web.app/apps/underline/terms Privacy Policy: https://zaustudios.web.app/apps/underline/privacy