Parallel Books vs Azbukum E
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.
Azbukum E
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Application for reading Azbukum books.
Screenshots
Verdict
Parallel Books and Azbukum E 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Parallel Books ships an update every 3 months, Azbukum E every 4 months. The most recent releases landed on August 28, 2026 and September 6, 2026 respectively.
| Parameter | Parallel Books | Azbukum E |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | — |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 33 MB |
| Age rating | 12+ | 4+ |
| Developer | High Tea IT Limited | Azbukum |
In-app purchases
Parallel Books
No in-app purchases
Azbukum E
No in-app purchases
Questions
Is Parallel Books free?
Is Azbukum E free?
Do Parallel Books or Azbukum E have ads?
Which is updated more often, Parallel Books or Azbukum E?
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