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.

What’s New

Version 1.35

Dark Mode
Bug Fixes

Ratings and Reviews

4.5 out of 5
18 Ratings

18 Ratings

Sarwia137935 ,

A very impressive application

A love the idea of reading a book in two languages and never thought that there would be any possibility to do it for free and here is Parallel books...

Enogirl4u ,

Nice concept

I really like the concept of this app. Even though it doesn't have a big selection, it's very useful. I hope that they take this further. Something I appreciate is that it doesn't have any ads, and you can download the books for free. If they decide to charge something in order to obtain a bigger selection, I feel that would be a good idea. However, I hope they always keep this app ad free; and if ever it becomes popular, that they don't get greedy and start asking a lot money in order to get rid of the ads.

Kurobaray ,


The app is seriously awesome i've been looking for something that could improve my german and spanish hope you add some more books and there is a bug where the screen goes blank i don't know if it is only in my iphone if not i hope it gets fixed soon


High Tea IT Limited
6.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Portuguese, Russian, Simplified Chinese, Spanish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like