Parallel Books vs LingoBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Parallel Books
Learn a new language by reading books with side-by-side translations. This app keeps translations synchronized as you read, allowing for full immersion. Easily switch between display modes and add notes for a personalized learning experience.
- Dual language display
- Synchronized translations
- Adjustable display modes
- Searchable notes
- Day/night themes
- Highlighting
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Become fluent in a new language. Read a book in your new tongue while having a parallel copy in your native language handy for reference. Now thanks to Parallel Books, this technique is available on iPad, iPhone and iPod touch. Translations will automatically stay in sync, leaving you free to be immersed in the words on the page. Reading a book in two different languages at the same time has never been easier! - Designed for people learning a new language. - Displays a book simultaneously in two different languages. - Translations stay in sync as you read. - Stretchy, “chewing gum" overlay visually connects parallel content. - Chewing gum overlay can be hidden. - Translations can be displayed in two columns on the screen, or each translation can fill an entire screen. - Continuously scrolls or pages through content without needing to change mode. - Tapping on a paragraph shows the translation of that paragraph. - Double tapping hides tool bars, giving more space. - Multicolored highlights and searchable notes can be added. - Includes day and night themes. - Currently books are available in English, German, French, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Esperanto, Korean, Chinese, Arabic plus more. - Some books include multiple translations in the same language; ideal for literature and translation students. - Parallel Books is in development for other platforms. - New books are being added all the time. - All books are currently FREE.
LingoBook
This app is an ebook reader designed for language learners. It allows you to read books in various formats and instantly translate any word you tap. You can also explore bilingual content like YouTube videos and news articles to enhance your vocabulary and comprehension.
- Read ebooks in multiple formats
- Built-in dictionary for 80+ languages
- Instant word translation
- Import your own books
- Bilingual YouTube videos
- Bilingual news articles
- Smart dictionary for vocabulary building
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Read books. Learn languages. All in one app. LingoBook is the ultimate ebook reader for language learners. Whether you're reading a novel in English or an article in French, LingoBook helps you understand every word – instantly. MAIN FEATURES - Read ebooks in PDF, EPUB, MOBI, AZW3 and more - Built-in dictionary with support for 80+ languages - Tap any word to see its meaning and translation - Import your own books easily from your device or cloud MORE TO EXPLORE - Watch bilingual YouTube videos with subtitles - Read bilingual news from around the world - Discover bilingual stories to improve your reading - Use the smart dictionary to build your vocabulary daily Perfect for English learners, language lovers, and avid readers who want to explore new languages through books and videos. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Parallel Books at 5.0 against LingoBook's 3.7. Parallel Books also leads on in-app purchases (none vs 3) and iOS requirement (15.6 vs 18.6). LingoBook's advantage is ratings volume (3 vs 1). On price, update cadence, ads and device support 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
Both are free to download. LingoBook sells 3 in-app purchases, starting at $1.00 per month. Parallel Books asks for nothing beyond the download.
Parallel Books holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Parallel Books ships an update every 3 months, LingoBook every 4 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | Parallel Books | LingoBook |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 2 MB | 541 MB |
| Age rating | 12+ | 12+ |
| Developer | High Tea IT Limited | BILINGO COMPANY LIMITED - LEARN ENGLISH 4 SKILLS |
Customer experience
Parallel Books
LingoBook
In-app purchases
Parallel Books
No in-app purchases
LingoBook
- Premium Monthly$1.001 Month
- Premium Yearly$10.001 Year
- Premium Trial Yearly7 Days trial$10.001 Year
Questions
Is Parallel Books free?
Is LingoBook free?
Which has better reviews, Parallel Books or LingoBook?
Do Parallel Books or LingoBook have ads?
Which is updated more often, Parallel Books or LingoBook?
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