Zoundy vs Sumi Book
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zoundy
Access a library of free audiobooks and discover new authors. Enjoy exclusive content through a leading mobile application designed for audiobook listeners.
- Free audiobooks
- Discover new authors
- Exclusive content
- Mobile app access
- Industry-leading platform
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Discover new Authors & Enjoy FREE audiobooks Zoundy listeners can access FREE audiobooks, find new authors, and enjoy exclusive content in our industry-leading mobile apps.
Sumi Book
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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
Screenshots
Verdict
The clearest difference is in-app purchases: Zoundy at none against Sumi Book's 3. Zoundy also leads on iOS requirement (13.0 vs 15.1). Sumi Book's advantage is update cadence (every 5 days vs every 4 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Sumi Book sells 3 in-app purchases, starting at $3.99 per month. Zoundy asks for nothing beyond the download.
Zoundy ships an update every 4 months, Sumi Book every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Zoundy | Sumi Book |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 37 MB | 53 MB |
| Age rating | 12+ | 17+ |
| Developer | Blisstech, Inc. | Oktay Demir |
In-app purchases
Zoundy
No in-app purchases
Sumi Book
- The Fine Press — Monthly$3.991 Month
- The Fine Press — Annual$24.991 Year
- The Fine Press — Lifetime$49.99









