Comparison

PDF Translate Pro vs TransFlow

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

Head to head
About

PDF Translate Pro

Instantly translate any document, from contracts to ebooks, across over 100 languages. Supports various file formats and offers a PDF to Voice feature for hands-free listening. Seamlessly sync translations across devices and access your history anytime.

Highlights
  • Translate 100+ languages with auto-detection
  • Unlimited page translation
  • Supports PDF, Word, Excel, PowerPoint
  • Translation history and cloud sync
  • Convert translated documents to audio
  • Merge and split files
Features
Read full description

Translate Any Document. Any Language. Anywhere. Break language barriers instantly with PDF Translate Pro — the most flexible document translator for mobile and web. Whether it's a contract, ebook, manual, or any file you need understood, translate it in seconds with support for 100+ languages. Translate Your Way Upload PDFs, Word docs, Excel spreadsheets, PowerPoint presentations, or even turn any web page into a translatable document. Our smart auto-detection identifies the source language automatically — just pick where you want it translated and go. No Limits, No Compromises Translate documents of any length with no page restrictions. Merge multiple files into one translation job. Preview your content at every step so nothing gets lost in translation. One Account. Every Device. Start a translation on your phone and access it on your desktop. Your Translation History keeps every file organized and ready whenever you need it — then share to any device or platform with one tap. Listen On The Go Need to absorb content hands-free? Convert any translated document to audio with our PDF to Voice feature, with over 500 natural-sounding voices to choose from. Features: 100+ Languages with Auto-Detection Unlimited Page Translation PDF, Word, Excel, PowerPoint Support Translation History & Cloud Sync Quick Preview at Every Step Easy Cross-Device Sharing PDF to Voice (500+ Voices) Document Scanner Merge & Split Files Web Page to PDF Converter Document Protection QR Code Support Privacy Policy: https://aldoo.co.uk/privacy Terms of Use: https://www.aldoo.co.uk/terms-of-use/

About

TransFlow

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.

Highlights
  • On-device EPUB translation
  • Bilingual output option
  • Customizable reader themes
  • Queue multiple books for translation
  • Export translated EPUBs
  • Pause and resume translation
Features
Read full description

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://is.gd/xWX6SJ

Screenshots

PDF Translate Pro4 screens
TransFlow4 screens

Verdict

The call

The clearest difference is update cadence: PDF Translate Pro at every 8 days against TransFlow's every 17 months. PDF Translate Pro also leads on iOS requirement (15.0 vs 26.0). On price, review sentiment, ads and in-app purchases 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. PDF Translate Pro sells 10 in-app purchases, starting at $2.99 per 7 days and TransFlow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDF Translate Pro ships an update every 8 days, TransFlow every 17 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

Scorecard2 real differences · 8 level
PDF Translate Pro versus TransFlow: the parameters behind the verdict, then further details
ParameterPDF Translate ProTransFlow
PriceFreeFree
Rating4.1 (291 ratings) — better—
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings291 — better—
Update frequencyEvery 8 days — betterEvery 17 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better26.0
Further details — not scored
Size152 MB11 MB
Age rating4+4+
DeveloperAldoo Ltd实 许

Customer experience

PDF Translate Pro

All ratings281 ratings
Positive76.5%
Neutral2.8%
Negative20.6%
Written reviews31 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

TransFlow

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

PDF Translate Pro

Reported bugs

8 issues
  • App crashes during processing
  • App hangs during translation
  • Translated text overlaps existing text
  • Translated documents are empty or gibberish
  • App keeps asking to renew subscription
Show 3 more
  • App crashes and removes credits without output
  • App charged for pages not produced
  • Servers inaccessible for credit use

Requested features

3 requests
  • Ability to redo translations
  • Clearer subscription terms
  • Customer support feature

TransFlow

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

PDF Translate Pro

Subscriptions8
  • Weekly Premium$2.997 Days
  • Weekly Premium$4.997 Days
  • PDF Translator Pro Weekly$6.997 Days
Show 5 more
  • Monthly Access Plan$6.991 Month
  • Monthly Premium$9.991 Month
  • Weekly Unlimited Access$9.997 Days
  • PDT Translator Pro Weekly Plan$12.997 Days
  • PDT Translator Pro Weekly Plan$19.997 Days
One-time2
  • 3 credits$0.99
  • 20 credits$3.99
1 purchases

TransFlow

One-time1
  • TransFlow Pro$9.99

Questions

Is PDF Translate Pro free?
PDF Translate Pro is free to download, with in-app purchases available.
Is TransFlow free?
TransFlow is free to download, with in-app purchases available.
Do PDF Translate Pro or TransFlow have ads?
Neither PDF Translate Pro nor TransFlow shows ads.
Which is updated more often, PDF Translate Pro or TransFlow?
PDF Translate Pro ships an update every 8 days, and TransFlow every 17 months. Most recently, PDF Translate Pro was updated on November 7, 2026 and TransFlow on November 8, 2026.

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