Comparison

Yomu vs YomuMark

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

Head to head
About

Yomu

Features
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Yomu is a reader for iPhone and iPad built for heavy scanned and self-scanned PDFs. Convert self-scanned books, scanned handouts, and technical or class-material PDFs into .yom, a reading-optimized format, and page through them fast — a reader built to focus on reading. [Key Features] • Blazing-fast page rendering Smooth, stress-free reading even with heavy scanned PDFs and large documents. • Full-text search, even for scans Build an index and jump straight to matching pages. Image-only scanned PDFs are made searchable with on-device OCR. • Two-page spreads and reading direction Choose left-to-right or right-to-left, with full two-page spread support. • Comfortable reading adjustments Shadow reduction at page edges and color inversion for dark reading. • Everything runs on device Conversion, search, and reading all run on device — your content is never sent to a server. Read offline anytime. • Simple one-time purchase Add up to 2 books for free. Adding a 3rd requires a single one-time purchase — no subscription, no recurring charges. Terms of Use: https://yomu.juntaki.com/terms/ Privacy Policy: https://yomu.juntaki.com/privacy-policy/

About

YomuMark

Features
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Snap a page. Save what matters. YomuMark is a reading notes app that lets you save pages from print books and eBooks, then organize them with highlights, underlines, handwriting, notes, and tags. Use OCR to capture text from saved pages and keep the passages, ideas, and insights you want to remember—all organized by book. It’s also perfect for anyone who doesn’t want to write directly in a physical book. Keep your books clean while moving your highlights and notes into a digital space. With tags and search, you can quickly find what you saved later and turn your reading into a personal collection of notes and knowledge. 【What You Can Do with YomuMark】 ■ Organize Your Books Keep the books you’re reading and the ones you want to revisit together on your in-app bookshelf. ■ Save Pages That Matter Capture and save important pages, then organize them by book for easy access later. ■ Capture Text with OCR Use OCR to recognize text from saved pages and select the passages you want to keep. ■ Add Highlights and Underlines Mark important sentences and memorable passages just like you would in a physical book. ■ Write and Draw on Pages Add freehand notes with pens and markers. Use circles, rectangles, arrows, and more to visually mark important areas. Eraser, Undo, and Redo are also supported. ■ Save Your Thoughts and Notes Keep your own thoughts, interpretations, and ideas together with the passages that inspired them. ■ Organize with Tags Add tags by topic or purpose so your reading notes are easier to organize and revisit. ■ Search Books, Pages, and Notes Search across saved books, pages, OCR text, highlights, notes, and more to quickly find what you’re looking for. ■ Keep Pages Organized Sort pages by page number or date added, and switch between different views to organize them the way you prefer. 【YomuMark Is Perfect For You If You…】 ・Don’t want to highlight or write directly in your books ・Want to keep physical books clean ・Want to save passages that catch your attention ・Want to manage reading notes on your phone ・Want to save and search book content with OCR ・Want to organize highlights, underlines, and notes by book ・Want to keep important points from books used for study or work ・Want to turn reading insights into your own knowledge collection 【Don’t Just Read It. Keep What You Learn.】 “I want to read this sentence again later.” “I want to remember this idea.” “I want to save what I just realized while reading.” YomuMark helps you capture those small moments of insight as they happen. Save the pages that matter, then add highlights, underlines, handwriting, and notes. When you want to revisit them, find everything again through your bookshelf, tags, and search. YomuMark isn’t just about saving pages. It helps you turn what you read into knowledge you can keep and use. Snap a page. Save your thoughts. With YomuMark, make every book worth coming back to.

Screenshots

Yomu4 screens
YomuMark4 screens

Verdict

The call

The clearest difference is ads: Yomu at none against YomuMark's shown. YomuMark's advantage is update cadence (every 4 days vs every 4 months) and iOS requirement (15.5 vs 17.0). On price, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Yomu sells 3 in-app purchases, starting at $3.99 per month and YomuMark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Yomu ships an update every 4 months, YomuMark every 4 days. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 3 level
Yomu versus YomuMark: the parameters behind the verdict, then further details
ParameterYomuYomuMark
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.5 — better
Further details — not scored
Size12 MB81 MB
Age rating4+4+
DeveloperJumpei TakiyasuTsuyoshi Ninomiya

In-app purchases

3 purchases

Yomu

Subscriptions2
  • Yomu Pro Monthly$3.991 Month
  • Yomu Pro Yearly$29.991 Year
One-time1
  • Yomu Unlimited$9.99
1 purchases

YomuMark

One-time1
  • YomuMark Pro$9.99

Questions

Is Yomu free?
Yomu is free to download, with in-app purchases available.
Is YomuMark free?
YomuMark is free to download, with in-app purchases available.
Do Yomu or YomuMark have ads?
YomuMark shows ads; Yomu does not.
Which is updated more often, Yomu or YomuMark?
Yomu ships an update every 4 months, and YomuMark every 4 days. Most recently, Yomu was updated on October 25, 2026 and YomuMark on October 15, 2026.

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