MemLingo vs DuoText
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MemLingo
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Ready to become fluent? MemLingo makes vocabulary learning fast, fun, and effective. Stop boring memorization. Start playing! CREATE YOUR LANGUAGE LIBRARY • Build unlimited dictionaries for any language • Organize words into color-coded categories • Add translations, notes, and personal comments • Edit or delete anytime LEARN THROUGH PLAY — 4 ENGAGING GAMES • MATCH TRANSLATION → Select the correct meaning • SPELLING BEE → Type the word correctly • SPEED ROUND → Race against the 60-second clock • WORD BUILDER → Unscramble the letters Choose words from any dictionary or category. Only unlearned words appear in games! PERFECT YOUR PRONUNCIATION • Tap any word to hear native pronunciation • 20+ languages supported • Select your preferred dialect (US, UK, Brazilian Portuguese, etc.) • Great for listening practice TRACK YOUR MASTERY • Each word needs 8 correct answers to master • Visual progress ring shows your level • Mastered words automatically hide from games • Focus on what you haven't learned yet PRO FEATURES — ONE-TIME PAYMENT • Unlimited dictionaries & categories • All 4 game modes unlocked • Import/Export CSV backup • Priority email support • Lifetime access — NO subscription WHY MEMLINGO? • Perfect for beginners and intermediate learners • Great for students, travelers, and polyglots • Works offline — learn anywhere • Clean, modern design inspired by Figma • Smooth animations and delightful interactions LANGUAGES YOU CAN LEARN French • Spanish • Portuguese • German • Italian Japanese • Korean • Chinese • Russian • Arabic English • Dutch • Swedish • Polish • Turkish And many more! Download MemLingo today and start your language journey! One payment. Lifetime access. Unlimited learning. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DuoText
This app helps you learn languages by reading books. It offers sentence-by-sentence translation, vocabulary building, and the ability to import your own texts. Enjoy a customizable reading experience with various themes and fonts.
- Sentence-by-sentence translation
- Vocabulary saving with context
- Import EPUB and TXT files
- Customizable reading themes and fonts
- Offline translation after initial download
- Built-in library of classic texts
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Duotext translates whole sentences while you read. Keep the original in view and reveal a sentence’s translation with a tap, or keep translations visible with Pro. Read on iPhone and iPad. 24 CLASSIC READS IN YOUR LIBRARY • Three complete starter texts, free to read. • The English language setting starts with three French fables by Jean de La Fontaine, with ready-to-read English translations. • Other language settings start with English stories by Kate Chopin, O. Henry and Oscar Wilde. • Twenty-one more texts with Pro: French stories by Maupassant and fables by La Fontaine for the English language setting; English stories, including stories by Saki, for other settings. TRANSLATION THE WAY YOU WANT IT • Tap to translate — free, in every book: touch the mark after a sentence and its translation appears • Always-on translation under the text, with no tapping at all — with Pro • Choose how the text is split: by line, by sentence, or by paragraph — with Pro • Tap a single word to see what it means in that exact sentence BUILD VOCABULARY FROM REAL BOOKS • Press and hold a sentence to save a word together with the context you met it in • Free: up to 20 saved words. Pro: an unlimited dictionary BRING YOUR OWN BOOKS — WITH PRO • Import EPUB and TXT files • Paste any text • Save an article from the web by link A READER FIRST • Six reading themes, serif, sans serif and rounded fonts, adjustable type size — all free • Covers, reading progress, and your place in the book • Your books stay on your device HOW TRANSLATION WORKS Duotext uses the translation built into iOS, so text is translated on your iPhone. The first time you use a language pair, iOS downloads that language model, which needs an internet connection; after that, translation runs on your device. You can translate into the languages your device supports for translation. No account, no sign-up. WHAT IS FREE AND WHAT IS PRO Free: 3 complete stories, tap to translate in any book, up to 20 saved words, and every theme, font and type size. Duotext Pro adds: 21 more stories, always-on translation under every line, the by line / by sentence / by paragraph layouts, importing your own EPUB and TXT files, pasted text and links, and an unlimited dictionary. SUBSCRIPTION AND PURCHASE Duotext Pro is available as a yearly subscription with a free trial, or as a one-time Lifetime purchase. • Payment is charged to your Apple Account at confirmation of purchase. • The subscription renews automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. Your Apple Account is charged for renewal within 24 hours before the end of the current period. • You can manage your subscription and turn off auto-renewal in your Apple Account settings. • Any unused portion of a free trial period is forfeited when you purchase a subscription. • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://artsaverin-star.github.io/legal/duotext/privacy.html
Screenshots
Verdict
MemLingo and DuoText are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. MemLingo sells 1 one-off in-app purchase and DuoText sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | MemLingo | DuoText |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | — | Every 3 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 38 MB |
| Age rating | 4+ | 12+ |
| Developer | Storch | Iaroslav Saverin |
In-app purchases
MemLingo
- MemLingo+$9.99
DuoText
- Monthly$1.991 Month
- Yearly3 Days trial$13.991 Year
- Lifetime$39.99









