Comparison

BookPDF vs Plain Reader

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

Plain Reader

This app provides a distraction-free reading experience for various file formats including EPUB, TXT, PDF, and comics. It allows direct access to files from cloud storage or external drives without importing or creating copies, offering customizable reading settings and text-to-speech functionality.

Highlights
  • Read directly from Files, iCloud Drive, USB
  • Customizable text and theme settings
  • Text-to-speech in 31 languages
  • Supports ZIP and CBZ archives
  • Right-to-left reading for manga
  • PDF text selection and search
  • Distraction-free reading interface
Features
Read full description

Plain Reader opens your books, PDFs, comics and image folders right where they are — in Files, iCloud Drive, or on a USB drive or external SSD. No account, no import, no copies. READ, NOTHING ELSE • Menus stay hidden while you read. Tap the center to bring them back. • Pages fill the screen. Swipe, tap the sides, or drag the slider to jump anywhere. • Turn your iPhone or iPad sideways for two-page spreads, with the cover on its own. • Turn pages with a Bluetooth page turner or a keyboard. TXT AND EPUB • Choose the font, size, line spacing, margins and theme — pages reflow to fit. • Listen: books in 31 languages are read aloud by natural voices made on your device. • Table of contents, search and bookmarks. TXT text encoding is detected automatically. COMICS AND MANGA • Opens ZIP and CBZ archives without unpacking them — even ones with thousands of pages. • Right-to-left reading for manga. • A folder of images opens as one book. PDF • Sharp pages, search, table of contents, thumbnails and text selection. • Two-page spreads on wide screens. YOUR FILES STAY YOURS • Files are read in place and never uploaded anywhere. • Bookmarks and your reading position are kept for every book. • Works with iCloud Drive and external storage through the Files app. PLAIN READER PRO Plain Reader is free with a small banner ad. Watch one short video ad to read without banner ads for 2 hours, or to use Listen for 1 hour. Plain Reader Pro removes all ads and adds unlimited Listen, Auto Page Turn, and blocking the apps you pick while you read. Choose a Monthly or Yearly subscription — Yearly starts with a 7-day free trial for new subscribers — or a one-time Lifetime purchase. Restore it on your iPhone and iPad with the same Apple Account. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel them in your App Store account settings. Terms of Use: https://ourbeom.com/plainreader/terms Privacy Policy: https://ourbeom.com/plainreader/privacy

Screenshots

BookPDF4 screens
Plain Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: BookPDF at none against Plain Reader's 4. BookPDF also leads on ads (none vs shown). On price, update cadence, 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. Plain Reader sells 4 in-app purchases, starting at $0.99 per month. BookPDF asks for nothing beyond the download.

UpkeepUpdate frequency

BookPDF ships an update every 2 days, Plain Reader every 3 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

Scorecard2 real differences · 6 level
BookPDF versus Plain Reader: the parameters behind the verdict, then further details
ParameterBookPDFPlain Reader
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 2 days — betterEvery 3 days
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS1818.0
Further details — not scored
Size2 MB45 MB
Age rating4+4+
DeveloperYuta SugawaraOurBeom

In-app purchases

None

BookPDF

No in-app purchases

4 purchases

Plain Reader

Subscriptions2
  • Plain Reader Pro (Monthly)$0.991 Month
  • Plain Reader Pro (Yearly)7 Days trial$6.991 Year
One-time2
  • Plain Reader Pro$2.99
  • Plain Reader Pro (Lifetime)$12.99

Questions

Is BookPDF free?
BookPDF is free to download, with no in-app purchases.
Is Plain Reader free?
Plain Reader is free to download, with in-app purchases available.
Do BookPDF or Plain Reader have ads?
Plain Reader shows ads; BookPDF does not.
Which is updated more often, BookPDF or Plain Reader?
BookPDF ships an update every 2 days, and Plain Reader every 3 days. Most recently, BookPDF was updated on October 31, 2026 and Plain Reader on November 1, 2026.

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