Comparison

PDFex vs AI PDF Translate

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

Head to head
About

PDFex

Features
Read full description

Read in another language. Understand more. Remember what matters. PDFex helps you translate documents and turn your content into useful study material, all in one place. TRANSLATE YOUR PDFs Translate text-based PDFs while retaining their layout where possible. Open the translated PDF in the app, then save or share it. Scanned PDFs use text recognition and produce a readable translated PDF; their original layout is not retained. TURN CONTENT INTO STUDY MATERIAL Create concise summaries, quizzes, flashcards, matching exercises, fill-in-the-blank exercises and open-ended questions. Review wrong quiz answers and return to saved study progress. START WITH THE CONTENT YOU HAVE Import a PDF or text document, paste a supported YouTube link, upload an audio file, or translate text from a photo. YouTube captions must be available; supported formats and size limits apply. KEEP YOUR RESULTS TOGETHER Search your library, filter by result type, mark favorites and rename results so you can find them again. MADE FOR EVERYDAY READING AND LEARNING Use PDFex to explore an article, review course material, understand a document or practice what you have learned. AI-generated content can contain mistakes; check important information against your source. SUBSCRIPTION AND CREDITS An active subscription is required to create results. Each plan includes a credit quota, and the app shows the estimated credit cost before you start. On renewal, credits reset to the plan quota; unused credits do not carry over. Document length, file size and page limits apply. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.erayjs.com/pdfex/privacy

About

AI PDF Translate

Features
Read full description

Translating a PDF used to mean copying text into a browser tab, losing all formatting in the process, then manually fixing terms the translator got wrong. This app handles the whole document at once โ€” keeping the layout as close to the original as possible โ€” so what you get back is actually readable. TRANSLATION ENGINES Free users get Google Translate and Bing. Paid plans unlock GPT-4o, Gemini 2.5 Flash, DeepSeek, and Doubao. For academic papers and technical documentation, DeepSeek and GPT-4o handle domain-specific terminology more accurately. For quick turnarounds on everyday documents, Google is plenty. You choose the engine; you're not locked into one. BILINGUAL MODE When turned on, the original text and translation appear on alternating pages in the same file. Useful for cross-referencing the source, or for anyone studying a foreign language alongside a translation. BACKGROUND PROCESSING Translation runs on the server. Once you submit a file, you can close the app and do something else. You'll get a push notification when it's ready to download โ€” no need to keep the screen on or wait around. WHAT IT HANDLES Academic papers, patent filings, technical manuals, financial reports, legal contracts โ€” if it's a PDF, you can submit it for translation. PLANS ยท Free: A monthly page allowance that resets each month, Google Translate only ยท Basic: 150 pages/month, all engines ยท Pro: 500 pages/month, all engines, priority queue ยท Credits: No subscription required โ€” buy a block of pages and use them whenever Subscriptions are billed through Apple and can be cancelled at any time in your device settings. Terms of Use: https://pdf.zentools.me/terms

Screenshots

PDFex4 screens
AI PDF Translate4 screens

Verdict

The call

PDFex and AI PDF Translate are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PDFex sells 3 in-app purchases, starting at $2.99 per 7 days and AI PDF Translate sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
PDFex versus AI PDF Translate: the parameters behind the verdict, then further details
ParameterPDFexAI PDF Translate
PriceFreeFree
Update frequencyEvery 4 daysโ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.1 โ€” better
Further details โ€” not scored
Size67 MB38 MB
Age rating4+4+
DeveloperEray Can Topcu่พ‰ ๅด

In-app purchases

3 purchases

PDFex

Subscriptions3
  • Weekly$2.997 Days
  • Monthly$9.991 Month
  • Yearly$89.991 Year
4 purchases

AI PDF Translate

Subscriptions2
  • Basic Plan$6.991 Month
  • Pro Plan$19.991 Month
One-time2
  • 50 Credits$2.99
  • 200 Credits$9.99

Questions

Is PDFex free?
PDFex is free to download, with in-app purchases available.
Is AI PDF Translate free?
AI PDF Translate is free to download, with in-app purchases available.
Do PDFex or AI PDF Translate have ads?
Neither PDFex nor AI PDF Translate shows ads.

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