Comparison

EPUB Reader vs Reader IQ

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EPUB Reader

This app helps you learn languages by reading books with side-by-side translations. You can tap to translate words or sentences, save vocabulary, and customize your reading experience. It offers a selection of free classic reads and the option to import your own EPUB and TXT files.

Highlights
  • Dual-text translation
  • Tap to translate words/sentences
  • Save vocabulary with context
  • Import EPUB and TXT files
  • Customizable reading themes and fonts
  • Offline translation after initial download
Features
Read full description

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

About

Reader IQ

Features
Read full description

That Spanish you took in high school, the language your abuela still speaks at home, the manga you've always wanted to read in the original — Reader IQ gets you there. Hard words are translated right above the line, a tap on any word explains it in context, and every book can be listened to as well as read. BOOKS THAT SPEAK. AUDIOBOOKS YOU CAN READ. Focus mode turns any book into a listening lesson — no audio edition needed. It reads any e-book aloud sentence by sentence and highlights each word as it's spoken. For supported language pairs on compatible devices, it shows full-sentence subtitles; otherwise, word translations remain available. Tap any word for the dictionary without stopping the audio. On compatible devices and systems, where the book's language and speech model are supported, on-device transcription turns audiobook speech into word-synced text with translated subtitles; otherwise, the audiobook still plays normally. Listening time counts toward shared time, streak, and goal totals. YOUR BOOKS, MANY FORMATS Tired of a library that runs out of new stories after a few weeks? Import your own — from email, cloud, messaging apps, or your browser — and the catalog never runs dry: - Books: EPUB, FB2, MOBI, AZW3, TXT, Markdown and more - Research & scans: PDF and DjVu — scanned pages read with on-device OCR - Comics: CBZ, including manga read right to left, the way it was drawn - Audiobooks: m4b, mp3 and more TRANSLATIONS ABOVE THE LINE — ONLY WHERE YOU NEED THEM Brushing up before a trip to Mexico City, or starting Japanese from scratch? Tell Reader IQ your level — or take a two-minute test — and it translates only the words you don't know yet, right above the line. You read for meaning, not decoding, and the hints fade as your vocabulary grows. A DICTIONARY THAT UNDERSTANDS CONTEXT Tap any word and an on-device model reads the sentence to select the most likely meaning — "spring" the season, not the coil. Pronunciation, word forms, example sentences, conjugation tables for 8 languages, and kanji/hanzi breakdowns with stroke order. Once downloaded, the dictionaries live on your device and work offline. A GRADED PATH FROM YOUR FIRST 10 WORDS You don't start with a 400-page novel. Adapted books and a graded path of short stories take you from your first words to longer texts, adding just a few new words at each step. Read-along speech, quizzes and spaced re-reads make it stick — so you're ready when you pick up a real novel. SPACED REPETITION, STRAIGHT FROM YOUR BOOKS Every word you tap is saved with the sentence it came from, and that sentence becomes your flashcard. Four practice modes — recognition, fill-in-the-blank from your own books, listening, and typed recall — run on a real spaced-repetition schedule with honest next-review dates. Meet a saved word again while reading and it advances on its own: reading is the review. See how much of each level (A1–C2) you've covered, and export your words — handy for a book club reading the same title. GOALS, STREAKS AND 40 AWARD LADDERS Set a daily reading goal and keep it going with a weekly ring and a heatmap. Set a word-count goal for a date and watch it get closer. Around 40 awards celebrate how learning actually happens — first book finished, longest streak, biggest day, getting back on track after you fall off. 10 READING LANGUAGES English, Spanish, French, German, Italian, Japanese, Korean, Portuguese, Chinese, and Thai. Pinyin with tone colors, furigana and vertical Japanese text, Thai tone marks, and beginner modes if you don't know the script yet. Translations into 30+ languages. Reading in the original is still the most natural way to learn a language — no drills, just the story pulling you forward. Reader IQ clears out what made it hard: the dictionary detours, books too advanced, words forgotten the next day. Open your first book tonight.

Screenshots

EPUB Reader4 screens
Reader IQ4 screens

Verdict

The call

The clearest difference is in-app purchases: Reader IQ at none against EPUB Reader's 2. EPUB Reader's advantage is update cadence (every 5 days vs fortnightly). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EPUB Reader sells 2 in-app purchases, starting at $14.99 per year. Reader IQ asks for nothing beyond the download.

UpkeepUpdate frequency

EPUB Reader ships an update every 5 days, Reader IQ fortnightly. The most recent releases landed on October 11, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 8 level
EPUB Reader versus Reader IQ: the parameters behind the verdict, then further details
ParameterEPUB ReaderReader IQ
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size22 MB188 MB
Age rating12+12+
DeveloperIaroslav SaverinDmitry Zaika

In-app purchases

2 purchases

EPUB Reader

Subscriptions1
  • Yearly3 Days trial$14.991 Year
One-time1
  • Lifetime$24.99
None

Reader IQ

No in-app purchases

Questions

Is EPUB Reader free?
EPUB Reader is free to download, with in-app purchases available.
Is Reader IQ free?
Reader IQ is free to download, with no in-app purchases.
Do EPUB Reader or Reader IQ have ads?
Neither EPUB Reader nor Reader IQ shows ads.
Which is updated more often, EPUB Reader or Reader IQ?
EPUB Reader ships an update every 5 days, and Reader IQ fortnightly. Most recently, EPUB Reader was updated on October 11, 2026 and Reader IQ on October 19, 2026.

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