Comparison

Yomu vs Offline PDF Viewer

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

Head to head
About

Yomu

Features
Read full description

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 โ€” a reader built to focus on reading. [Key Features] โ€ข Blazing-fast page rendering Smooth, stress-free reading even with heavy scanned PDFs and large documents. โ€ข 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. โ€ข Two-page spreads and reading direction Choose left-to-right or right-to-left, with full two-page spread support. โ€ข Comfortable reading adjustments Shadow reduction at page edges and color inversion for dark reading. โ€ข Everything runs on device Conversion, search, and reading all run on device โ€” your content is never sent to a server. Read offline anytime. โ€ข Simple one-time purchase Add up to 2 books for free. Adding a 3rd requires a single one-time purchase โ€” no subscription, no recurring charges. Terms of Use: https://yomu.juntaki.com/terms/ Privacy Policy: https://yomu.juntaki.com/privacy-policy/

About

Offline PDF Viewer

Features
Read full description

Offline PDF Viewer is an app for reading PDF files transferred to your iPad or iPhone. Its main feature is the ability to browse folders transferred through Finder or iTunes File Sharing while preserving their original folder hierarchy. This app may suit you if: - You have a large collection of scanned PDF files - You want to transfer PDFs to your iPad while keeping the same folder structure as on your Mac or PC - Your PDF collection is too large for cloud synchronization, and you prefer to manage it entirely on your device This app focuses on reading PDFs. It does not include editing, annotation, or some other features commonly found in general-purpose PDF viewers. Please review the following list of supported and unsupported features before using the app. โ–  Features - Browse folders transferred through Finder or iTunes File Sharing while preserving their folder hierarchy - Adjust page-margin cropping and fine-tune rotation for each PDF - Switch to right-to-left page turning, primarily for Japanese books - View two pages side by side - See your approximate position in the PDF with a subtle โ–ฒ indicator โ–  Not Supported - Cloud synchronization of PDF files - Moving or renaming files within the app - Writing to or editing PDF files - Bookmarks, highlights, annotations, or text selection - Page zooming

Screenshots

Yomu4 screens
Offline PDF Viewer3 screens

Verdict

The call

The clearest difference is update cadence: Offline PDF Viewer at daily against Yomu's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Yomu sells 3 in-app purchases, starting at $3.99 per month and Offline PDF Viewer 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, Offline PDF Viewer daily. The most recent releases landed on October 22, 2026 and October 18, 2026 respectively.

Scorecard1 real difference ยท 5 level
Yomu versus Offline PDF Viewer: the parameters behind the verdict, then further details
ParameterYomuOffline PDF Viewer
PriceFreeFree
Update frequencyEvery 4 monthsDaily โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 โ€” better17.6
Further details โ€” not scored
Size12 MB10 MB
Age rating4+4+
DeveloperJumpei Takiyasutakaaki024

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

Offline PDF Viewer

One-time1
  • Support Developer$2.99

Questions

Is Yomu free?
Yomu is free to download, with in-app purchases available.
Is Offline PDF Viewer free?
Offline PDF Viewer is free to download, with in-app purchases available.
Do Yomu or Offline PDF Viewer have ads?
Neither Yomu nor Offline PDF Viewer shows ads.
Which is updated more often, Yomu or Offline PDF Viewer?
Yomu ships an update every 4 months, and Offline PDF Viewer daily. Most recently, Yomu was updated on October 22, 2026 and Offline PDF Viewer on October 18, 2026.

Other comparisons