
About
Translate foreign language EPUB books into your preferred language using on-device translation. Read translated books with customizable themes and export them to your favorite EPUB readers. Offers both translation-only and bilingual output options.
What's New in TransFlow
2.0.0
November 6, 2026
Designed for reading in your language! TransFlow turns foreign-language EPUBs into translated EPUBs using Apple’s on-device translation. No API keys, no accounts, no servers — your books never leave your device. Key features: - Import a reflowable EPUB, pick source and target languages, and translate on your device - Leave anytime — the job pauses and picks up where it left off when you come back - Queue several books; switching pauses the current one instead of losing progress - Translation-only, or bilingual output that keeps each original passage with its translation below¹ - Clean paginated reader with swipe or tap-to-turn pages; remembers your place (including iPad rotation and split screen) - Reading themes, font size, line spacing, and margins; extra downloadable fonts¹ - The result is a real EPUB — export to Apple Books, ReadFlow, or any EPUB reader¹ Free to download. Translating and reading stay free (translation-only). TransFlow Pro is a one-time purchase that unlocks bilingual output, unlimited exports (3 free to try), automatic light/dark reading theme, and extra fonts. For readers who want the file itself: export a real EPUB anytime and keep reading wherever you like. ¹ Bilingual output, unlimited exports, auto theme, and downloadable fonts require TransFlow Pro. Fixed-layout EPUBs (comics, picture books, heavily designed layouts) are not supported. Translation quality and available languages depend on Apple’s on-device translation. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bit.ly/imms_epub_pp
MoreSubscriptions & In-App Purchases
$9.99
TransFlow Pro
Bilingual, unlimited exports, themes & fonts.
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FAQ
What languages can TransFlow translate?
Translation quality and available languages depend on Apple's on-device translation. The app allows you to pick source and target languages for your EPUB books.
Does TransFlow support all EPUB files?
TransFlow supports reflowable EPUBs. Fixed-layout EPUBs, such as comics or picture books with heavily designed layouts, are not supported.
How does TransFlow handle translation progress?
The translation process can be paused at any time and will resume where it left off when you return. You can also queue several books, and switching between them will pause the current job without losing progress.
What features are included in TransFlow Pro?
TransFlow Pro is a one-time purchase that unlocks bilingual output, unlimited EPUB exports (with 3 free to try), automatic light/dark reading themes, and additional downloadable fonts.
Can I read translated books outside of TransFlow?
Yes, the result is a real EPUB file that can be exported to Apple Books, ReadFlow, or any other EPUB reader. This allows you to keep reading your translated books wherever you like.
Is TransFlow available on multiple devices?
TransFlow is supported on Mac, iPhone, and iPad, allowing you to translate and read your EPUB books across your Apple ecosystem.
How often is TransFlow updated?
The latest version of TransFlow is 2.0.0, last updated on November 6, 2026. Updates ensure the app remains functional and may introduce new features or improvements.
Does TransFlow have ads?
TransFlow is free to download and does not contain advertisements. The core translation and reading features are free, with optional Pro features available for purchase.





