Comparison

EBook Libre vs Parallel Books

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

Head to head
About

EBook Libre

Access a vast library of classic and contemporary novels, thrillers, and children's books. Discover popular and recent titles, search for specific books, and enjoy reading features like bookmarks and a twilight mode.

Highlights
  • Thousands of novels, thrillers, and children's books
  • Classics from French and international authors
  • Books sorted by popularity and recency
  • Search engine for finding books
  • Bookmark and auto-save functionality
  • Customizable background fonts
  • Twilight reading mode
Features
Read full description

Read the world's greatest books — with AI by your side. Ebook Libre brings you thousands of timeless classics from the public domain (Project Gutenberg and beyond) and lets AI summarize, translate and even read them aloud — chapter by chapter. AI CHAPTER SUMMARIES Grasp any chapter in seconds. Ideal for studying, revising, or deciding what to read next. SENTENCE-BY-SENTENCE TRANSLATION Read in the original language without being fluent. The original text and its translation appear together, sentence after sentence — a beautiful way to learn through the books you love. LISTEN AS AUDIO Turn any summary or chapter into natural speech. Read with your eyes, or your ears, anywhere. THOUSANDS OF FREE, LEGAL BOOKS Classics in English, Spanish, German, Italian and more — all public domain, 100% legal. Or import your own EPUB and PDF files. A CLEAN READING EXPERIENCE Minimalist, border-free interface. Customize font, size and theme (light, sepia, dark). CLOUD SYNC Pick up your reading right where you left off, on all your devices. — Ebook Libre PRO (optional subscription): unlimited translations and summaries, no ads, cloud sync. Monthly or annual auto-renewing subscription billed to your Apple account. Renewal is charged 24h before the end of the current period unless turned off. Manage or cancel in your account settings. Terms: https://ebook-libre.web.app/terms.html · Privacy: https://ebook-libre.web.app/privacy.html

About

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.

Highlights
  • Dual language display
  • Synchronized translations
  • Adjustable display modes
  • Searchable notes
  • Day/night themes
  • Highlighting
Features
Read full description

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.

Screenshots

EBook Libre4 screens
Parallel Books4 screens

Verdict

The call

The clearest difference is in-app purchases: Parallel Books at none against EBook Libre's 2. Parallel Books also leads on ads (none vs shown). EBook Libre's advantage is update cadence (every 2 days vs every 3 months) and review sentiment (59% vs 40%). On price, monetization model, 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. EBook Libre sells 2 in-app purchases, starting at $2.99 per month. Parallel Books asks for nothing beyond the download.

UpkeepUpdate frequency

EBook Libre ships an update every 2 days, Parallel Books every 3 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
EBook Libre versus Parallel Books: the parameters behind the verdict, then further details
ParameterEBook LibreParallel Books
PriceFreeFree
Rating4.4 (153 ratings) — better—
Positive reviews59.1% of reviews — better40.0% of reviews
Number of ratings153 — better—
Update frequencyEvery 2 days — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size118 MB2 MB
Age rating4+12+
DeveloperManh Toan NguyenHigh Tea IT Limited

Customer experience

EBook Libre

All ratings153 ratings
Positive85.6%
Neutral5.2%
Negative9.2%
Written reviews22 reviews
Positive59.1%
Neutral13.6%
Negative27.3%

Parallel Books

All ratings77 ratings
Positive75.3%
Neutral0.0%
Negative24.7%
Written reviews30 reviews
Positive40.0%
Neutral3.3%
Negative56.7%

In-app purchases

2 purchases

EBook Libre

Subscriptions2
  • Ebook Libre Pro - Monthly$2.991 Month
  • Ebook Libre Pro — Yearly$29.991 Year
None

Parallel Books

No in-app purchases

Questions

Is EBook Libre free?
EBook Libre is free to download, with in-app purchases available.
Is Parallel Books free?
Parallel Books is free to download, with no in-app purchases.
Do EBook Libre or Parallel Books have ads?
EBook Libre shows ads; Parallel Books does not.
Which is updated more often, EBook Libre or Parallel Books?
EBook Libre ships an update every 2 days, and Parallel Books every 3 months. Most recently, EBook Libre was updated on October 16, 2026 and Parallel Books on October 9, 2026.

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