Comparison

ScrollWave vs Sumi Book

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ScrollWave

Features
Read full description

ScrollWave is a serialized reading and listening app for people who want stories in episodes. Create your own books, listen to them episode by episode, read along with the full text, and continue right where you left off. ScrollWave is built for stories that fit into real life: short sessions, longer listening, and easy progress across every book. With ScrollWave, you can: • Create your own serialized books • Listen to episode-based audio • Read the text version of each episode • Resume from your last listening position • Track progress across your library • Browse available books and continue unfinished stories • Keep your created books organized in one place • Use credits to unlock listening when available ScrollWave combines the feel of audiobooks, episodic storytelling, and a personal library in one simple experience. Start a book, follow the story in audio or text, and come back whenever you are ready for the next episode.

About

Sumi Book

Features
Read full description

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

ScrollWave3 screens
Sumi Book4 screens

Verdict

The call

The clearest difference is in-app purchases: ScrollWave at none against Sumi Book's 3. Sumi Book's advantage is update cadence (every 5 days vs fortnightly) and device support (3 vs 1). On price and ads there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Sumi Book sells 3 in-app purchases, starting at $3.99 per month. ScrollWave asks for nothing beyond the download.

UpkeepUpdate frequency

ScrollWave ships an update fortnightly, Sumi Book every 5 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

Scorecard4 real differences Ā· 2 level
ScrollWave versus Sumi Book: the parameters behind the verdict, then further details
ParameterScrollWaveSumi Book
PriceFreeFree
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.615.1 — better
Further details — not scored
Size21 MB53 MB
Age rating12+17+
DeveloperAlexander BiskaevOktay Demir

In-app purchases

None

ScrollWave

No in-app purchases

3 purchases

Sumi Book

Subscriptions2
  • The Fine Press — Monthly$3.991 Month
  • The Fine Press — Annual$24.991 Year
One-time1
  • The Fine Press — Lifetime$49.99

Questions

Is ScrollWave free?
ScrollWave is free to download, with no in-app purchases.
Is Sumi Book free?
Sumi Book is free to download, with in-app purchases available.
Do ScrollWave or Sumi Book have ads?
Neither ScrollWave nor Sumi Book shows ads.
Which is updated more often, ScrollWave or Sumi Book?
ScrollWave ships an update fortnightly, and Sumi Book every 5 days. Most recently, ScrollWave was updated on October 25, 2026 and Sumi Book on November 5, 2026.

Other comparisons