Comparison

Lu Reader vs Realbook

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

Head to head
About

Lu Reader

This application offers a streamlined reading experience for various document and e-book formats, including EPUB and PDF. It features customizable reading settings, text-to-speech functionality, and smart library management. Users can back up their data to Google Drive.

Highlights
  • Supports EPUB, PDF, TXT, DOC, FB2, HWP, ZIP, CBZ
  • 11 customizable color themes
  • Adjustable font size, line spacing, and margins
  • In-app brightness control
  • Text-to-speech with adjustable speed
  • Automatic table of contents generation
  • Smart library with sorting and search
Features
Read full description

Lu Reader is a fast, clean, all-in-one reader for your documents and e-books - with no clutter and no sign-up required. SUPPORTED FORMATS - Text and e-books: TXT, EPUB, PDF, FB2, DOC, DOCX, HWP, HWPX - Archives containing text files: ZIP, CBZ COMFORTABLE READING - 11 color themes (cream, sepia, mint, black, navy and more) - Fine-tune font size, line spacing and margins - In-app brightness control for reading in the dark - Keep-screen-on, screen rotation and immersive full-screen mode VOICE READING (TTS) - Listen to any text with the current sentence highlighted - Adjustable speed from 0.6x to 2.0x - Choose from voices installed on your device - Sleep timer to stop automatically AUTOMATIC TABLE OF CONTENTS - Builds a chapter list even for plain TXT files - Detects multilingual chapter patterns - Jumps to and highlights the current chapter SMART LIBRARY - Add files from the Files app or the in-app file browser - Reading progress percentage and progress bar - Sort by name, date or progress, and search by filename - Bookmark your position; select a word for dictionary and translation - Auto-scroll and in-text search BACKUP & RESTORE - Safely back up your books, reading positions, bookmarks and settings to your own Google Drive - Restore everything on a new device Lu Reader keeps the focus on reading. Download it and enjoy your library, your way.

About

Realbook

Features
Read full description

Realbook is the ultimate all-in-one eBook reader and document viewer built for book lovers. Experience the tactile nostalgia of real books with our realistic 3D paper page flips, listen to any book hands-free with on-device offline Text-to-Speech (TTS), and manage your entire digital library in one beautiful bookshelf. Whether you read EPUB novels, PDF textbooks, TXT web novels, MOBI/AZW3 classics, or CBZ/CBR manga and comic books, Realbook renders every page with crisp clarity and fluid performance. REALISTIC 3D PAGE TURNS & PAPER PHYSICS • True-to-life 3D curved page flip animations with authentic shadows and light reflection • Single-page view for smartphones and dual-page spread for tablets, foldables, and landscape mode • Intuitive navigation: tap page edges, swipe, or drag with realistic finger tracking and optional haptic feedback • Distraction-free, pure reading mode that keeps you immersed in the story ON-DEVICE TEXT-TO-SPEECH (TTS) AUDIOBOOK PLAYER • 100% offline speech synthesis engine—listen anywhere without consuming cellular data • Turn any text-based book (EPUB, TXT, MOBI, FB2, DOCX) into an audiobook instantly • Perfect for daily commutes, driving, workouts, household chores, or bedtime listening • Customize voice gender, narration speed, pitch, and volume to match your preference UNIVERSAL FORMAT COMPATIBILITY • Text-Based Formats: EPUB, TXT, MOBI, AZW3, FB2, DOCX with instant reflow, typography adjustments, and full-text search • Fixed-Layout & Visual Media: PDF, CBZ, and CBR comic books with sharp zoom, quick page jumping, and smooth rendering • Seamless handling of large text files and multi-chapter fantasy novels without lag CUSTOMIZABLE TYPOGRAPHY & NIGHT READING • True AMOLED dark mode and night themes (sepia, warm paper, high contrast) to reduce eye strain • Custom fonts, font size scaling, line height, letter spacing, and page margin controls • Dyslexia-friendly fonts and accessibility viewing modes for comfortable extended reading SMART BOOKSHELF & ANNOTATIONS • Instant import of supported book files directly from your device storage or downloads • Organize your library with custom shelves, sorting options, and book cover displays • Fast full-text search across entire books to locate quotes, characters, and key passages • Highlight favorite passages, add detailed personal notes, and bookmark chapters • Automatic reading position sync so you never lose your place 100% PRIVATE & OFFLINE-FIRST • No account creation, no registration, and no cloud logins required • Your reading habits, library collection, and personal notes remain strictly on your device • Complete offline functionality—read freely on airplanes, subways, or remote getaways FREE PUBLIC DOMAIN CLASSICS • Explore a curated catalog of thousands of timeless world literature classics available for free download whenever connected to the internet. Upgrade your daily reading ritual. Download Realbook today and discover why thousands of avid readers choose our 3D page turns and offline TTS audio!

Screenshots

Lu Reader4 screens
Realbook4 screens

Verdict

The call

Lu Reader and Realbook are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

ScorecardNo meaningful differences
Lu Reader versus Realbook: the parameters behind the verdict, then further details
ParameterLu ReaderRealbook
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyWeeklyWeekly
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.5 — better16.0
Further details — not scored
Size95 MB60 MB
Age rating4+4+
Developersanghun jeongWONJIN CHA

In-app purchases

None

Lu Reader

No in-app purchases

None

Realbook

No in-app purchases

Questions

Is Lu Reader free?
Lu Reader is free to download, with no in-app purchases.
Is Realbook free?
Realbook is free to download, with no in-app purchases.
Do Lu Reader or Realbook have ads?
Both Lu Reader and Realbook show ads.
Which is updated more often, Lu Reader or Realbook?
Lu Reader ships an update weekly, and Realbook weekly. Most recently, Lu Reader was updated on November 5, 2026 and Realbook on October 31, 2026.

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