Parallel Books vs Lingo7
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.
Lingo7
This app offers an immersive language learning experience through engaging reading and listening content. It helps users build vocabulary, understand grammar in context, and refine pronunciation with smart tools and a vast library of texts.
- Immersive reading with instant translations
- Integrated audio for pronunciation practice
- Extensive library of books and articles
- Spaced repetition for vocabulary retention
- Personalized word bank creation
- Pronunciation and accent refinement tools
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Improve your foreign language easily, enjoyably and effectively! Take your language skills further through immersive reading, sharper listening practice and focused vocabulary work. The app suits all levels, especially if you already know the basics and want to keep advancing. English, German, French, Spanish, Italian, Portuguese, Serbian and Russian, choose your language and keep improving! Read with parallel translation Improve your comprehension by reading texts in your target language with instant translation alongside. The library includes classic literature, summaries of modern books, stories and texts for different difficulty levels. This approach helps you practice daily and expand your vocabulary naturally. Audiobooks in your target language Sharpen your listening skills with quality audiobooks: classics, modern retellings, short stories. You can listen while reading or switch to audio-only mode for full immersion, training your ear for authentic foreign speech. Smart flashcards for vocabulary improvement Expand your active vocabulary with intuitive flashcards and exercises. The app includes collections: 1000 words for steady progress, 3000 words for intermediate level and 5000 words for deeper mastery. These collections help strengthen your foundation step by step. Built-in dictionary Tap any word while reading to see its translation, definition and pronunciation. This keeps your reading smooth and uninterrupted, so you can focus on the content. Designed for steady improvement Whether you're polishing the basics or refining advanced fluency, you can practice reading, listening and vocabulary at your own pace. The app is perfect for travelers, students, professionals, self-improvers and people who've used Duolingo or similar apps. Why users love this app The app offers free features, a large library of parallel books and audiobooks, powerful tools for reading practice and vocabulary improvement, plus a simple and attractive interface. Keep improving your foreign language with an app that makes daily practice interesting, easy and effective! german, deutsch, alemán, allemand, tedesco, alemão, немецкий, немачки, duits, niemiecki, němčina, almanca, tyska, saksa, germană, γερμανικά, 德语, ドイツ語, 독일어, जर्मन, ألمانية, english, englisch, inglés, anglais, inglese, inglês, английский, енглески, engels, angielski, angličtina, İngilizce, engelska, englanti, engleză, αγγλικά, 英语, 英語, 영어, अंग्रेज़ी, إنجليزية, spanish, spanisch, español, espagnol, spagnolo, espanhol, испанский, шпански, spaans, hiszpański, španělština, İspanyolca, spanska, espanja, spaniolă, ισπανικά, 西班牙语, スペイン語, 스페인어, स्पेनिश, إسبانية, french, französisch, francés, français, francese, francês, французский, француски, frans, francuski, francouzština, Fransızca, franska, ranska, franceză, γαλλικά, 法语, フランス語, 프랑스어, फ़्रेंच, فرنسية, italian, italienisch, italiano, italien, итальянский, италијански, italiaans, włoski, italština, İtalyanca, italienska, italia, italiană, ιταλικά, 意大利语, イタリア語, 이탈리아어, इतालवी, إيطالية, portuguese, portugiesisch, portugués, portugais, portoghese, português, португальский, португалски, portugees, portugalski, portugalština, Portekizce, portugisiska, portugali, portugheză, πορτογαλικά, 葡萄牙语, ポルトガル語, 포르투갈어, पुर्तगाली, برتغالية, russian, russisch, ruso, russe, russo, русский, руски, russisch, rosyjski, ruština, Rusça, ryska, venäjä, rusă, ρωσικά, 俄语, ロシア語, 러시아어, रूसी, روسية, serbian, serbisch, serbio, serbe, serbo, sérvio, сербский, српски, servisch, serbski, srbština, Sırpça, serbiska, serbia, sârbă, σερβικά, 塞尔维亚语, セルビア語, 세르비아어, सर्बियाई, صربية Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Lingo7 at 100% against Parallel Books's 40%. Lingo7 also leads on update cadence (every 2 days vs every 3 months). Parallel Books's advantage is in-app purchases (none vs 2). On price, ads, 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
Both are free to download. Lingo7 sells 2 in-app purchases, starting at $4.99 per month. Parallel Books asks for nothing beyond the download.
Parallel Books ships an update every 3 months, Lingo7 every 2 days. The most recent releases landed on August 28, 2026 and September 19, 2026 respectively.
| Parameter | Parallel Books | Lingo7 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (6 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 6 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 109 MB |
| Age rating | 12+ | 4+ |
| Developer | High Tea IT Limited | SeYu LLC |
Customer experience
Parallel Books
Lingo7
In-app purchases
Parallel Books
No in-app purchases
Lingo7
- Monthly subscription$4.991 Month
- Yearly subscription$25.001 Year
Questions
Is Parallel Books free?
Is Lingo7 free?
Do Parallel Books or Lingo7 have ads?
Which is updated more often, Parallel Books or Lingo7?
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