Comparison

Yomu vs Deckle

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

Deckle

Features
Read full description

Meet Deckle, the beautifully designed reading tracker and personal library built for book lovers who want more out of their reading. Whether you are trying to read more this year, organizing a massive physical library, or just want to see your reading stats, Deckle is the only app you need. BUILD YOUR LIBRARY INSTANTLY Quickly add physical books to your digital shelves using our lightning-fast barcode scanner, or search millions of titles manually. BEAUTIFUL, SMART ORGANIZATION Ditch the messy lists. Organize your collection using custom shelves, filter by reading status, and keep track of your "Up Next" queue and Wishlist. UNLOCK YOUR TROPHY ROOM Augment your reading into a rewarding game. Unlock beautifully designed trophies and achievements as you log pages, finish books, and maintain your reading streak. DEEP READING INSIGHTS Get to know your reading habits. Deckle tracks your reading velocity (your personal "Speedometer") and helps you estimate exactly how long it will take to finish your current read. INCREDIBLE CUSTOMIZATION & PRIVACY Make the app yours. Choose from custom app themes (including true OLED dark modes) and lock your private library behind Face ID / Touch ID for ultimate peace of mind. Say goodbye to clunky, outdated reading logs. Download Deckle and fall in love with reading all over again.

Screenshots

Yomu4 screens
Deckle4 screens

Verdict

The call

The clearest difference is in-app purchases: Deckle at none against Yomu's 1. Deckle also leads on update cadence (every 4 weeks vs every 4 months). Yomu's advantage is iOS requirement (17.0 vs 26.2). On price, ads 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 1 one-off in-app purchase. Deckle asks for nothing beyond the download.

UpkeepUpdate frequency

Yomu ships an update every 4 months, Deckle every 4 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard3 real differences ยท 3 level
Yomu versus Deckle: the parameters behind the verdict, then further details
ParameterYomuDeckle
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 weeks โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.0 โ€” better26.2
Further details โ€” not scored
Size12 MB47 MB
Age rating4+4+
DeveloperJumpei TakiyasuMichael Luce

In-app purchases

1 purchases

Yomu

One-time1
  • Yomu Unlimited$9.99
None

Deckle

No in-app purchases

Questions

Is Yomu free?
Yomu is free to download, with in-app purchases available.
Is Deckle free?
Deckle is free to download, with no in-app purchases.
Do Yomu or Deckle have ads?
Neither Yomu nor Deckle shows ads.
Which is updated more often, Yomu or Deckle?
Yomu ships an update every 4 months, and Deckle every 4 weeks. Most recently, Yomu was updated on October 31, 2026 and Deckle on November 5, 2026.

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