Sumi Book vs Linea Reader

Sumi is a beautifully crafted, native reader for the books, manga and comics you already own or have the right to read. Sumi comes empty by design. It includes no catalog, no content, and no built-in sources — you decide what to read. Import your own files, or add a source by pasting the web address of a site you are entitled to access. Sumi is the elegant reading experience on top; the library is yours. A READER, NOT A LIBRARY • Ships with zero content and zero pre-loaded sources • Import your own files (.cbz / .zip) straight from the Files app • Add your own source — nothing is bundled DESIGNED FOR READING • A refined dark interface made for long sessions • Smooth paged and continuous (webtoon) reading modes • Right-to-left support for manga • Remembers your place across your whole collection NO ADS, EVER Sumi shows no advertising. The reading view is just the page — nothing between you and your story. PREMIUM Unlock the full experience: • Incognito mode — read without saving history or progress • App Lock — guard your library with Face ID, Touch ID, or a passcode • Backup & restore — export and recover your entire collection • Premium themes — including the dusk-rose Sakura palette • Offline downloads — keep what you're reading with you YOUR RESPONSIBILITY Sumi is a neutral reading tool. It is not affiliated with any website, publisher, or content, and cannot guarantee the availability of any third-party source. You are responsible for ensuring you have the right to access whatever you add. Please support the authors and publishers you love. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Linea is a calm reading workspace for difficult material. Import PDFs, EPUBs, MOBI files, DOCX documents, Markdown, images, scans, and web pages. Read with thoughtful typography, highlight and annotate passages, listen from your current position, and ask questions without losing your place. Your library stays organized around the work in front of you. Resume where you stopped, move between chapters, and keep your reading progress together. Features: • Import documents and URLs • Read PDFs, ebooks, Markdown, and more • Highlight passages and add notes • Listen from your current reading position • Ask document-aware questions while reading or listening • Keep reading progress and annotations together • Choose from four reading palettes AI and your data: Linea uses AI only when you ask it to. It does not run your documents through AI in the background. Eligible signed-in Linea accounts can use Linea's rate-limited managed Ask without a personal API key: the question and relevant document context are processed by Linea, which may call an upstream model. For a user-owned cloud provider, Linea sends your question and relevant document context directly from your device to that provider using the API key you supplied; Linea's developer does not receive those direct-to-provider requests. When available and selected, on-device Apple Intelligence requests stay on your device. Linea is built for sustained attention: fewer distractions, better context, and a clear path back to the thread.