Polyglot Reader vs Readlang Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Polyglot Reader
Read books in foreign languages and learn new vocabulary. Tap on unknown words for instant translations and save them to flashcards for later study. Supports various document formats and offers pronunciation practice and knowledge tests.
- Read books in multiple formats (PDF, EPUB, TXT)
- Translate unknown words and phrases instantly
- Create flashcards for vocabulary learning
- Pronunciation support for words and phrases
- Knowledge tests for vocabulary sets
- Scan and recognize text from documents
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Read books in any foreign language and turn every unknown word into a flashcard you'll actually remember. Version 5.0 brings a complete redesign — a calmer reader, a smarter library and a new way to study. Polyglot Reader is your pocket library, dictionary and flashcard trainer in one app. Tap any word or phrase in a book, get an instant translation with transcription, hear the pronunciation, and save it to a deck to review later. Built for iPhone, iPad and Mac, with a refined dark theme. — READ — • Completely redesigned reader, bookmarks, translation popup and settings • New System theme that follows iOS automatically, plus refined Light and Dark • Open books in PDF, EPUB, FB2, RTF and TXT • Import from Dropbox, Google Drive, OneDrive or any file app • Scan a paper page — the app recognizes the text and saves it as a book • Highlights words you don't know yet, right inside the page • Vertical scrolling, comfortable type settings, picture zoom — LIBRARY — • Thousands of free classic books in 38+ languages, sorted into sections like Classics, Sherlock Holmes, Shakespeare, Horror & Mystery, Children's Books, Philosophy, Adventure • Adapted A2–B1 readers for German learners, plus original literature in English, French, Spanish, Italian, Russian, Japanese, Chinese, Latin, Greek and many more • New sorting, new sections and search inside every shelf • Filter to show only recent books • Difficulty level and tags shown right on each cover • Drag and drop to reorganize your shelves • New "Added manually" section for everything you imported yourself • Smoother search, scroll and sharing on iPad — LEARN — • Redesigned cards and study screens • Ready-made flashcard sets for English, Spanish, Portuguese, Russian, Chinese and Japanese — verbs, nouns and themed categories • Smart virtual decks: All cards, Recent, Unknown — see progress at a glance • Quick preview and actions inside every deck • Pick a default deck for new words you save while reading • Per-card knowledge level with a colored progress bar (red → green as you master each word) • Three study modes: foreign only, foreign + native, native only • Hands-free mode — keep learning without touching the screen • Long-press context menu: mark as known or unknown in one tap • Optional shuffled order during study • Filter to show only words you haven't learned yet • Pronunciation for both the word and its translation • Knowledge tests for every deck • Export and import cards in CSV — TRANSLATE — • 111 offline dictionaries — no internet, no quota • On-the-fly transcription for all popular languages • Speech-to-text: just say the word, get the translation • Translate your own phrases and add them to any deck • Edit translations when you want a better wording • 90+ languages supported, including Arabic, Chinese, Dutch, English, French, German, Greek, Hebrew, Hindi, Italian, Japanese, Korean, Latin, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian, Vietnamese and many more — AND ALSO — • System, Light and Dark themes • Choose Google or Yandex as default online translator • Compact mode on iPhone, expanded card view on iPad • Notifications to bring you back to recent cards Whether you're reading Sherlock Holmes in English, Kafka in German, Don Quijote in Spanish or Dostoevsky in Russian — Polyglot Reader turns reading into vocabulary, one tap at a time. Questions or feedback: support@readandlearnapp.com
Readlang Mobile
Learn languages by reading content you enjoy. Tap any word for instant translation, save new vocabulary, and track your learning progress. Offers a free plan with daily limits and a premium subscription for unlimited access and advanced features.
- Instant word and phrase translation
- Save and review translated words
- Read websites and EPUB books
- Vocabulary practice
- Progress tracking
- Distraction-free reading
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Readlang Mobile Readlang Mobile helps you learn languages naturally by reading real content you actually enjoy — books, articles, and websites. Tap any word or phrase to see an instant translation without breaking your flow. Save new words, track your progress, and build vocabulary effortlessly while reading. Key Features: • Instant word translation while reading • Phrase translation support • Save and review translated words • Clean, distraction-free reading experience • Reading statistics and progress tracking • Read websites and books directly in the app Free Plan: • 30 translations per day • Phrase translations (up to 6 words) • Access to all books and websites in the app • View basic reading statistics Premium Features: • Unlimited translations • Phrase translations (up to 12 words) • Upload and read your own EPUB books • Multiple-choice vocabulary practice • Full access to advanced reading tools Subscription Information: Readlang Mobile offers auto-renewable subscriptions: • Monthly subscription • Yearly subscription (save with annual billing) Prices may vary by location and are shown in the app. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your Apple ID account settings. Legal: Terms of Use: https://readlang-mobile.com/terms Privacy Policy: https://readlang-mobile.com/privacy Contact: Support: support@readlang-mobile.com Website: https://readlang-mobile.com
Screenshots
Verdict
The clearest difference is ads: Readlang Mobile at none against Polyglot Reader's shown. Readlang Mobile also leads on review sentiment (100% vs 66%) and update cadence (every 6 days vs every 2 months). Polyglot Reader's advantage is ratings volume (74 vs 3) and iOS requirement (16.0 vs 18.0). On price, rating, in-app purchases and monetization model 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. Polyglot Reader sells 11 in-app purchases, starting at $3.99 per month and Readlang Mobile sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.4 for Polyglot Reader against 4.3 for Readlang Mobile. That said, the two scores are not equally well evidenced: Polyglot Reader has 74 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 66% of Polyglot Reader's written reviews are positive against 100% of Readlang Mobile's.
Polyglot Reader ships an update every 2 months, Readlang Mobile every 6 days. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.
| Parameter | Polyglot Reader | Readlang Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (74 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | 65.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 74 — better | 3 |
| Update frequency | Every 2 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 120 MB | 35 MB |
| Age rating | 4+ | 17+ |
| Developer | Anton Ivanov | Alisher Fayzullaev |
Customer experience
Polyglot Reader
Readlang Mobile
In-app purchases
Polyglot Reader
- Monthly subscription$3.991 Month
- Monthly subscription3 Days trial$7.991 Month
- Monthly subscription$7.991 Month
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- Monthly subscription$9.991 Month
- Annual subscription$22.991 Year
- Annual subscription$34.991 Year
- Annual subscription7 Days trial$39.991 Year
- Annual subscription$59.991 Year
- Upgrade from advanced to professional version$3.99
- Upgrade from Starter to Advanced version$15.99
- Full version$99.99
Readlang Mobile
- Readly Premium Monthly$6.991 Month
- Readly Premium Yearly1 Year trial$39.991 Year









