LingoBook vs ReadGem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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/
ReadGem
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Read books. Learn languages. Read the original. Compare translations. Understand more with AI. ReadGem turns reading into a natural way to learn languages. Explore the original text alongside its translation, compare how the same sentence is expressed across languages, and discover meaning through real books and real context. When a sentence is difficult, ask AI for an explanation. When a translation feels awkward, use AI to suggest a better one. Go beyond simply reading a translation — read, compare, understand, and learn. Read the original and translation together Explore the original text alongside its translation and see how meaning moves from one language to another. Instead of studying isolated words and grammar, experience language through real sentences, expressions, and context from books. Reading becomes learning naturally. Compare translations across languages See how the same sentence is expressed in different languages. Compare translations sentence by sentence and discover differences in wording, expression, and nuance. Whether you're learning English or exploring another language, ReadGem helps you see beyond a single translation. Understand more with AI Some sentences need more than a translation. Ask AI to explain difficult sentences, expressions, context, and nuance. Explore why a sentence means what it does and gain a deeper understanding of both the original text and the language you're learning. Use AI not just to get an answer, but to understand what you're reading. Improve translations with AI Found a translation that sounds awkward or doesn't fully capture the original? Ask AI to suggest a better translation. Compare the suggestion with the original and decide whether it expresses the meaning more naturally and accurately. Exploring better translations can itself become part of learning a language. Read and listen Listen to sentences while you read. Hear pronunciation and rhythm while following the text, and use books to practice listening and pronunciation as well as reading. Everything you need for EPUB reading ReadGem also includes essential EPUB reading features: Table of contents and chapter navigation Highlights and bookmarks Automatic reading position saving Font and reading appearance settings Offline reading for downloaded books ReadGem is for you if you want to: Learn English by reading original books Learn languages naturally through reading Read original text alongside translations Compare expressions across different languages Understand difficult sentences with AI Explore better translations with AI Read. Compare. Understand. Improve. A book is more than something to read. It can also be a rich source of real language and context. With ReadGem, read the original, compare translations, understand with AI, and discover better ways to express every sentence.
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Verdict
The clearest difference is in-app purchases: ReadGem at none against LingoBook's 3. ReadGem also leads on update cadence (every 4 days vs every 4 months). 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. LingoBook sells 3 in-app purchases, starting at $1.00 per month. ReadGem asks for nothing beyond the download.
LingoBook ships an update every 4 months, ReadGem every 4 days. Both last shipped on October 24, 2026.
| Parameter | LingoBook | ReadGem |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 541 MB | 27 MB |
| Age rating | 12+ | 4+ |
| Developer | BILINGO COMPANY LIMITED - LEARN ENGLISH 4 SKILLS | NEXTAOI, Inc |
In-app purchases
LingoBook
- Premium Monthly$1.001 Month
- Premium Yearly$10.001 Year
- Premium Trial Yearly7 Days trial$10.001 Year
ReadGem
No in-app purchases









