# TransFlow vs PDF

The clearest difference is update cadence: PDF at every 2 months against TransFlow's every 17 months. PDF also leads on iOS requirement (15.6 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. TransFlow sells 1 one-off in-app purchase and PDF sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

TransFlow ships an update every 17 months, PDF every 2 months. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | TransFlow | PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/pdf-ai-document-translator/id6753106766/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 7 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [实 许](https://appshunter.io/developer/681075194) | [Yogesh Rathod](https://appshunter.io/developer/1548316962) |

## What reviewers say

### TransFlow

[App page](https://appshunter.io/ios/app/transflow-epub-translator/id6475327487)

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:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TransFlow Pro | $9.99 | one-time |


### PDF

[App page](https://appshunter.io/ios/app/pdf-ai-document-translator/id6753106766)

Instantly translate PDF documents using AI. Supports over 100 languages and preserves original formatting. Easily export and share translated files securely from your phone.

**Highlights:** PDF translation, AI-powered accuracy, 100+ language support, Easy export and sharing, Secure processing

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Five File Translation | $4.99 | one-time |
| Ten File Translator | $8.99 | one-time |
| Twenty File Translator | $14.99 | one-time |
| Fifty File Translator | $24.99 | one-time |


## Frequently asked questions

### Is TransFlow free?

TransFlow is free to download, with in-app purchases available.

### Is PDF free?

PDF is free to download, with in-app purchases available.

### Do TransFlow or PDF have ads?

Neither TransFlow nor PDF shows ads.

### Which is updated more often, TransFlow or PDF?

TransFlow ships an update every 17 months, and PDF every 2 months. Most recently, TransFlow was updated on November 8, 2026 and PDF on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*