EPUB Reader vs TeaderBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
TeaderBook
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TeaderBook is an e-reader for people learning a language through books they choose themselves. Open your own FB2 or EPUB file, tap a sentence to translate it, or double-tap a word you do not know — the translation appears right on the page, without taking you away from the text. A few public-domain classics come with the app, so there is something to read from the very first minute. **YOU CHOOSE HOW IT TRANSLATES** • **Offline words** — instant translation of individual words, with no internet connection and no account. • **Offline translation** — whole sentences translated on your phone itself, still without an internet connection. • **Smart translation** — the most powerful option for difficult sentences; it understands the sentence in context. Models are downloaded only when you agree to it. When there is no connection, the app does not stop working — it falls back to a method that needs none. **WORDS THAT STAY WITH YOU** Every word you look up goes into your own dictionary, along with the sentence you encountered it in and a mark showing whether you know it or are still learning it. A separate screen brings those words back at increasing intervals, helping a word move from “seen it somewhere” to “know it.” The dictionary can be exported and imported as CSV. **BUILT FOR READING, NOT FOR DRILLING** • Real pagination, not endless scrolling — and a sentence split by a page break is still translated as a whole. • A choice of typefaces, including OpenDyslexic. • Light and dark themes, plus a dimmer for reading at night. • See how much time is left in the chapter and the book. • Statistics showing how long you read and how many words you worked through. • Pronunciation, read aloud using your phone’s own voice. **YOUR BOOKS STAY YOURS** TeaderBook is not a bookstore: apart from the few classics it comes with, you bring your own files. Your books, your reading position, your dictionary, and your statistics stay on your phone and are never uploaded. No ads, no analytics, no trackers. **TEADERBOOK PRO** Smart translation and Offline translation are available for free a few times a day, as is one grammar breakdown per day. TeaderBook Pro, an auto-renewing monthly or yearly subscription, removes those daily limits. Reading, Offline words, the dictionary, and reviews stay free — with no account and no internet connection. Privacy Policy: https://teader.app/privacy.html Terms of Use: https://teader.app/terms.html
Screenshots
Verdict
The clearest difference is iOS requirement: TeaderBook at 16.0 against EPUB Reader's 18.0. On price, ads, 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. EPUB Reader sells 2 in-app purchases, starting at $14.99 per year and TeaderBook sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | EPUB Reader | TeaderBook |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 83 MB |
| Age rating | 12+ | 4+ |
| Developer | Iaroslav Saverin | Maksym Hornostaiev |
In-app purchases
EPUB Reader
- Yearly3 Days trial$14.991 Year
- Lifetime$24.99
TeaderBook
- TeaderBook Pro Monthly$4.991 Month
- TeaderBook Pro Yearly$44.991 Year








