Sumi Book

Sumi Book

Your private fancy library

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Free
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Details

Released
June 16, 2026
Updated
November 3, 2026

Features

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About

Sumi is a beautifully crafted, native reader for the manga and comics you already own or have the right to read. Sumi comes empty by design: no catalog, no content, no built-in sources — you decide what to read. Import your own files, connect your own server, or add a source by pasting the address of a site you are entitled to access. Sumi brings the reading; the library is yours. A READER, NOT A LIBRARY • Your own .cbz, .cbr, .zip, .pdf and .epub files, from the Files app, AirDrop or Mail • Your own Komga or Suwayomi server • Your own source: paste a site's address, or share a page from Safari — no content or site is included: Sumi recognizes common site software as soon as you paste an address • "Test this source" shows which step fails, and Sumi notices when a site moves DESIGNED FOR READING • Ink, dark, and Paper, light: two themes made for long sessions • Paged or vertical-scroll reading, right to left for manga, and Guided View, panel by panel • Resume: the titles you're reading at the top of your Library, back to the exact page • An end-of-chapter page, bookmarks, and tap zones your way • Rate titles from one to five seals and keep a private note • On iPad, Sumi follows the size of its window, and the keyboard turns the pages • Free backup and restore of your whole collection THE NOTEBOOK Four tabs: Library, Browse, Notebook and Settings. The Notebook keeps track of your reading, like the seal books travellers have stamped from temple to temple: • Twenty-eight ink seals to earn by reading, a few of them secret • A forgiving daily streak, a weekly goal, and challenges for the month • The ink calendar, your ex libris and the year's Almanac, to share as pictures • "What to read tonight?": the omikuji draws a title from your pile • No account, no leaderboard: it all stays yours, and "Plain reading" hides the play when you just want to read BEYOND THE APP • The Resume reading widget takes you back to the right page • Siri, Shortcuts, Spotlight search and quick actions on the app icon THE FINE PRESS (PREMIUM) • Offline downloads, from your Komga or Suwayomi server too, with predictive download and storage management • iCloud sync across iPhone and iPad • New chapters in the background, the visual selector and Change source • Continuous reading, on to the next chapter by itself, two-page spreads, color filters, page previews • Detailed statistics, unlimited history, the whole year in the ink calendar, the Almanac month by month, the seals of the seasons • Streak and seal widgets, and the Papier, Hanko and Sakura app icons • Incognito mode, App Lock with Face ID, Touch ID or a passcode, the Sakura theme and an automatic theme Seals, the streak, the weekly goal, the omikuji and the Resume reading widget stay free. SUBSCRIPTIONS The Fine Press is available as a monthly or annual auto-renewing subscription, or as a one-time lifetime purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period; manage or cancel them in your Apple Account settings. 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/ Privacy Policy: https://sumi-reader.com/sumi-web/privacy
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What's New in Sumi Book

1.2.1

November 3, 2026

Sumi 1.2.1 reads the sites you add without going through our server, and keeps what you read more private. NEW • The sites you add are read with modules built into Sumi: their addresses are no longer sent to our server, and they work even when our server does not answer. • “Rate Sumi” in Settings › About. Now and then, after a seal, iOS also offers to rate the app, never while you read. IMPROVED • Guided View and Trim margins on downloaded chapters, imported files and your Komga and Suwayomi servers, and faster everywhere. • App Lock and Incognito mode: the app switcher no longer shows your page, Siri and Shortcuts no longer tell what you are reading, the Resume widget hides while the iPhone is locked, and in Incognito mode the pages you read no longer stay on the device. • iCloud sync: conflicting versions are merged instead of lost, and a change of iCloud account is taken into account. • Sumi fills the whole screen of iPhone Duo, open or closed. • Very large images, covers and pages alike, are scaled down for display: a file or a site can no longer exhaust the iPhone’s memory. • A source from a site Sumi no longer supports stops with a message that says why. FIXED • On iPad in a window, the reader’s close button and the headers no longer sit under the window controls. • In continuous reading, the page stays in place when the chapter reloads. • A hidden title no longer opens from a direct link, and the Notebook no longer names it. • The ex libris’ “Favorite” changes from day to day, even while the app stays open. • An interrupted import no longer leaves files behind. • A site that hangs no longer freezes your other sources. …and many other fixes.

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Subscriptions & In-App Purchases

The Fine Press — Monthly

Full access to every premium feature, billed monthly.

$3.991 Month
How to cancel Sumi Book subscription ⁉️