# DaTrans — Unlimited PDF translation

> Free and premium PDF translator with layout preservation and multi-language support. (iPhone/iPad app by Gook whan Ahn.)

- Source: https://appshunter.io/ios/app/datrans/id6738001463 (this page in markdown: same URL + `.md`)
- Developer: [Gook whan Ahn](https://appshunter.io/developer/402906875)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 18 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), European Spanish
- Released: 2024-12-17
- Data updated: 2026-08-24
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/datrans/id6738001463/reviews.md

## What is DaTrans?

1. Overview

Translate PDFs without restrictions while maintaining their layout for free.

Experience the highest quality with our PDF translator.

Translate PDFs quickly and without limits with just a few taps.

Supports free translation into 21 languages and up to 190 languages with a premium subscription.

Includes a note-taking feature, making it ideal for studying or research.

2. Key Features

1) Currently supports translating one PDF at a time.
2) Translate into up to 190 languages (21 languages available for free).
3) Features automatic language detection.
4) Offers four translation methods: Full Translation, Text Selection, Pen Brush, and Text Box.
5) Provides a chat translation window for Pen Brush and Text Box modes.
6) Premium users can translate image-based PDFs (not available for free).
7) Maintain layout integrity while translating without any limitations for free.

3. Feature Details

Explains toolbar buttons on both sides of the app.

4. Default State

Opens in Text Selection mode.
One-finger scrolling and long-press to select text for translation.


5. Left Toolbar

Unified Menu: Access main functions.
Open File: Load a PDF.
Save File: Save translated files.
Close File: Exit the current PDF.
Undo/Redo: Manage actions in drawing mode.


6. Right Toolbar

Share: Share translated files via iOS features.
Draw Mode: Annotate PDFs; translations appear in chat.
Text Box Mode: Groups fragmented text for smoother translation (free only).
Show/Hide Text Blocks: Toggle visibility of translation units.
Remove All Annotations: Clear all PDF annotations.
Account & Settings: Manage user login and app settings.


7. Second Row Toolbar

Left Sidebar: View PDF thumbnails and navigate pages.
Source/Target PDF Info: Display file details.
Select Source/Target Language: Choose languages (21 free, 190 premium).
Translation List: Manage translated PDFs.
Translation Chat Window: Real-time translation display and message translation.


8. Unlock All Features (Upgrade)

Unlock Button: Available in the left menu.
Settings: Login, choose free/premium, and remove ads/watermarks.
Language Upgrade: Access more languages by upgrading.


9. Refund Policy

Refunds within one week of purchase.
There are no refunds if any page is translated using premium.


10. Other Considerations

Language detection is limited to free languages for premium users.
PDFs are stored for ~90 days for issue resolution.
Re-translation fees are deducted from the premium balance.
Single device login for premium accounts.


11. Upcoming Updates

Text Box feature for premium users.
Option to set translation page ranges.

## Key features

- Unlimited PDF translation
- Layout preservation
- 21 free languages, 190 premium
- Automatic language detection
- Multiple translation methods
- Note-taking feature
- Image-based PDF translation (premium)

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lite | $4.99 | one-time |
| Premium | $19.99 | one-time |
| Standard | $9.99 | one-time |
| Remove Ads | $3.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/datrans/id6738001463/reviews.md

### 5/5 — 좋군요

*2025-02-08*

논문 보는 용으로 좋음

### 4/5 — 좋습니다.

*2025-02-06*

속도가 느리긴 하지만 이정도면 쓸만합니다. 다만 용량은 작더라도 텍스트가 1000페이지가 넘는 논문으로 테스트를 해보니 멈추는 부분이 존재했습니다. Epub 포맷도 지원해주면 최강일텐데 해당 부분이 아쉽습니다.

**Developer response:** Review 감사합니다.
조만간, 지원해보도록 하겠습니다.

## Frequently asked questions about DaTrans

### How many languages can DaTrans translate into?

DaTrans offers free translation into 21 languages. With a premium subscription, you can translate into up to 190 languages.

### Does DaTrans preserve the original PDF layout?

Yes, DaTrans is designed to maintain the layout integrity of PDFs during translation, both for free and premium users.

### Can DaTrans translate image-based PDFs?

Image-based PDF translation is a premium feature available only to subscribers. Free users can translate text-based PDFs.

### What are the different translation methods offered by DaTrans?

DaTrans supports Full Translation, Text Selection, Pen Brush, and Text Box modes, with a chat window available for Pen Brush and Text Box.

### Is DaTrans available on multiple devices with a premium account?

Premium accounts for DaTrans are limited to a single device login.

### How long are translated PDFs stored by DaTrans?

Translated PDFs are stored for approximately 90 days to assist with issue resolution.

### Does DaTrans have ads?

Yes, DaTrans contains advertisements. Users can remove ads and watermarks by upgrading to premium.

### What is the refund policy for DaTrans premium?

Refunds are available within one week of purchase. However, no refunds are issued if any page has been translated using premium features.

## Version history (last 5 releases)

### 1.1.7 — 2025-04-21

Fixed UI bugs in dark mode

### 1.1.6 — 2025-03-13

Modified to display the hovering view when using Apple Pencil in drawing and text box modes.

### 1.1.5 — 2025-03-08

1. Make the translation box resizable and draggable.
2. Fix flickering issue in drawing mode.

### 1.1.4 — 2025-02-23

1. Fixed the issue where the Workspace file disappears on each re-execution.
2. Added ShareSheet, and RenameSheet to Workspace.

### 1.1.3 — 2025-02-04

Fixed the orientation error on iPhones.

## Apps similar to DaTrans

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [TransLex: Document Translator](https://appshunter.io/ios/app/translex-document-translator/id6742726666) | — | Free | Productivity |
| [Translify for Safari](https://appshunter.io/ios/app/translify-for-safari/id6737042892) | — | Free | Productivity |
| [PDFTranslator: Keep Layout](https://appshunter.io/ios/app/pdftranslator-keep-layout/id6758367464) | — | Free | Productivity |
| [PDF Translator - Powered by AI](https://appshunter.io/ios/app/pdf-translator-powered-by-ai/id6739878059) | 1.0 (1) | Free | Productivity |
| [탭탭](https://appshunter.io/ios/app/id6754357960) | — | Free | Productivity |
| [가벼운 메모 - 심플노트, Notes, 기록](https://appshunter.io/ios/app/notes/id6444023270) | — | Free | Productivity |

## More apps by Gook whan Ahn

- [SolvePDF - AI PDF Math Solver](https://appshunter.io/ios/app/solvepdf-ai-pdf-math-solver/id6742311729)

All apps by Gook whan Ahn: https://appshunter.io/developer/402906875

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*