Comparison

BookLight vs DjVu Book Reader

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

Head to head
About

BookLight

This app helps language learners build vocabulary by translating words with a single tap while reading EPUB, PDF, or TXT files. It automatically saves new words and uses spaced repetition flashcards to aid memorization, eliminating the need for manual flashcard creation or app switching.

Highlights
  • Tap to translate words instantly
  • Automatic vocabulary saving
  • Spaced-repetition flashcards
  • Import EPUB, PDF, TXT files
  • Offline reading support
  • Customizable reading themes and fonts
  • Pronunciation audio
Features
Read full description

Reading a book in another language? Stop breaking your flow to look words up. BookLight translates any word with a single tap โ€” and remembers it for you. BookLight is a EPUB & PDF & Txt reader built for language learners. Tap a word for an instant translation, and it's saved to your vocabulary automatically. Then spaced-repetition flashcards bring it back right before you'd forget โ€” so every reading session actually builds your vocabulary. No app-switching. No flashcards to make by hand. Perfect for language learners, foreign-book readers, and anyone studying for TOEFL or IELTS. Key Features: Start Reading in Seconds โ€” Free Classics Inside - Download from various free classics (Project Gutenberg) right inside the app โ€” no files to find, no setup. - Or import your own DRM-free EPUB & PDF & TXT files from your device. - Read offline anytime, with your reading progress saved and restored automatically. Tap to Translate โ€” Without Losing Context - Tap any word for an instant translation: meaning by part of speech, phonetics, and an example sentence. - Tap an inflected word and see its base form, too. - Hear the pronunciation read aloud with one tap. - Every word you tap is saved automatically โ€” together with the sentence and the book it came from. - Translate into 9 languages: Korean, Spanish, French, Japanese, Chinese, Russian, Hindi, Vietnamese, and Indonesian. Remember Every Word โ€” Spaced Repetition - Your vocabulary list builds itself as you read โ€” no manual entry. - Review with spaced-repetition (SRS) flashcards that resurface each word right before you forget it. - Tap any saved word to jump straight back to the exact spot in the book. - Keep a daily streak and a smart reminder nudges you only when words are actually waiting. Your Book Becomes an Audiobook โ€” AI Read-Aloud - A natural, human-like on-device AI voice reads your book aloud โ€” choose from 10 voices. - The sentence being read is highlighted, so you can follow along with your eyes and ears. - Playback keeps going with the screen off or while you use other apps. - Playback speed from 0.5x to 2x โ€” faster on the commute, slower before sleep. - Speech is synthesized on your device, so it works without an internet connection. Read Your Way, Day or Night - 7 fonts and 25 reading themes โ€” from Sepia and Night to Rose Quartz, Sage, and Midnight. - Adjust font size and line spacing until the page feels just right. - Choose how you read โ€” page turns or continuous scroll. - Read hands-free with auto-scroll โ€” 10 speed levels, and a single touch pauses instantly. - Full dark mode plus automatic system-theme sync. - Side-by-Side two-page display mode for comfortable reading on tablets. Loved by readers in 10+ countries. Supports 9 translation languages and works with any DRM-free EPUB or TXT file. Download BookLight today โ€” and turn every reading session into a vocabulary lesson! - Privacy Policy: https://pearlismylove.github.io/apps/book-light/privacy-policy.html - Terms And Conditions: https://pearlismylove.github.io/apps/book-light/terms-and-conditions.html - Support: https://pearlismylove.github.io/apps/book-light/support.html

About

DjVu Book Reader

Features
Read full description

DjVu Reader is a focused document reader for DJVU and DJV files. Import scanned books, manuals, research papers, archives, and rare documents, then read them in a clean library built for long-form reading. The app keeps your DjVu collection organized with reading progress, file details, and a simple reader that gets out of the way. Features: - Open DJVU and DJV files - Import documents into your library - Track reading progress. Continue reading from your last position - Use light, dark, or system appearance The free plan includes 5 imported books. DjVu Reader Premium removes the import limit, so you can build an unlimited DjVu library. Premium is available as a monthly subscription or a lifetime purchase. Privacy Policy: https://yevgenii.dev/projects/djvu-reader/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BookLight4 screens
DjVu Book Reader4 screens

Verdict

The call

BookLight and DjVu Book Reader are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. BookLight sells 3 in-app purchases, starting at $0.99 per month and DjVu Book Reader sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
BookLight versus DjVu Book Reader: the parameters behind the verdict, then further details
ParameterBookLightDjVu Book Reader
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 daysโ€”
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS16.4 โ€” better17.6
Further details โ€” not scored
Size94 MB3 MB
Age rating4+4+
DeveloperJungjun LeeYevgenii Kryzhanivskyi

In-app purchases

3 purchases

BookLight

Subscriptions2
  • Monthly Plan$0.991 Month
  • Yearly Plan7 Days trial$7.991 Year
One-time1
  • Lifetime Plan$9.99
2 purchases

DjVu Book Reader

Subscriptions1
  • Monthly Premium$1.991 Month
One-time1
  • Lifetime Premium$5.99

Questions

Is BookLight free?
BookLight is free to download, with in-app purchases available.
Is DjVu Book Reader free?
DjVu Book Reader is free to download, with in-app purchases available.
Do BookLight or DjVu Book Reader have ads?
Neither BookLight nor DjVu Book Reader shows ads.

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