Polyglot Reader vs MemStacks
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
MemStacks
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MemStacks is a powerful yet easy-to-use flashcard app designed to help you learn anything efficiently. Create custom stacks filled with different types of cards: • AI Cards — generate complete cards using Apple Intelligence from your own prompts • Text Cards — enter your own terms and definitions • Photo Cards — pair images for visual learning • Translate Cards — type a word and get instant translations For an even faster start, create an AI Stack and let Apple Intelligence build a complete learning set around your chosen topic. Once your stack is ready, practice using smart exercise modes with random order, learning algorithms. With widgets, notifications, and a clean, focused design, MemStacks keeps you motivated to learn a little every day. Learn smarter. Remember longer. Build knowledge your way.
Screenshots
Verdict
The clearest difference is ads: MemStacks at none against Polyglot Reader's shown. MemStacks also leads on update cadence (every 2 days vs every 2 months). Polyglot Reader's advantage is iOS requirement (16.0 vs 18.0). On price, in-app purchases and device support 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 MemStacks sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Polyglot Reader ships an update every 2 months, MemStacks every 2 days. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.
| Parameter | Polyglot Reader | MemStacks |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (74 ratings) — better | — |
| Positive reviews | 65.7% of reviews | — |
| Number of ratings | 74 — better | — |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 120 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Anton Ivanov | Denızcan OZPINAR |
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
MemStacks
- Support the Developer$0.99









