Comparison

BookPDF vs Yomu

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

Head to head
About

BookPDF

Features
Read full description

このアプリは、PDFを“本のように”快適に読むためのシンプルなリーダーです。 右から左へのページめくり表示に対応し、読書の流れを邪魔しない設計にしてあります。 主な機能 ・右から左へ進むページめくり(読書向け表示) ・しおり(現在ページをワンタップで登録/解除) ・しおり一覧からページへジャンプ ・続きから再開(前回の読書位置を保存) ・PDFの取り込みとライブラリ管理(名前変更・削除) こんな人におすすめ ・PDF小説や資料を“読むために”使いたい ・余計な機能より、見やすさと操作の迷いの少なさを重視したい ※本アプリは、ユーザーが用意したPDFファイルを端末内で閲覧するためのアプリです。

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 — 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/

Screenshots

BookPDF4 screens
Yomu4 screens

Verdict

The call

The clearest difference is in-app purchases: BookPDF at none against Yomu's 3. BookPDF also leads on update cadence (every 2 days vs every 4 months). On price, ads, device support and iOS requirement 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. BookPDF asks for nothing beyond the download.

UpkeepUpdate frequency

BookPDF ships an update every 2 days, Yomu every 4 months. The most recent releases landed on October 11, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 4 level
BookPDF versus Yomu: the parameters behind the verdict, then further details
ParameterBookPDFYomu
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS1817.0 — better
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperYuta SugawaraJumpei Takiyasu

In-app purchases

None

BookPDF

No 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

Questions

Is BookPDF free?
BookPDF is free to download, with no in-app purchases.
Is Yomu free?
Yomu is free to download, with in-app purchases available.
Do BookPDF or Yomu have ads?
Neither BookPDF nor Yomu shows ads.
Which is updated more often, BookPDF or Yomu?
BookPDF ships an update every 2 days, and Yomu every 4 months. Most recently, BookPDF was updated on October 11, 2026 and Yomu on October 22, 2026.

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