BookLight - EPUB Translator
Tap to Translate & Save Words.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Reading a book in another language? Stop breaking your flow to look words up. BookLight translates any word with a single tap — 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 — 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 — Free Classics Inside
- Download from various free classics (Project Gutenberg) right inside the app — 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 — 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 — 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 — Spaced Repetition
- Your vocabulary list builds itself as you read — 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.
Read Your Way, Day or Night
- 7 fonts and 25 reading themes — 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 — page turns or continuous scroll.
- Read hands-free with auto-scroll — 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 — 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
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fix bugs and add improvements
The developer, Jungjun Lee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jungjun Lee
- Size
- 58.8 MB
- Category
- Books
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Plan $9.99
- Yearly Plan $7.99
- Monthly Plan $0.99
- Copyright
- © JUNGJUN LEE