# PDFExchanger vs EchoPDF Ai

The clearest difference is ads: EchoPDF Ai at none against PDFExchanger's shown. PDFExchanger's advantage is update cadence (every 2 weeks vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PDFExchanger ships an update every 2 weeks, EchoPDF Ai monthly. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | PDFExchanger | EchoPDF Ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 15 MB | 644 MB |
| Requires iOS | 17 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [楚城 卓](https://appshunter.io/developer/1565528837) | [UNLIMITED BURST TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1842058922) |

## What reviewers say

### PDFExchanger

[App page](https://appshunter.io/ios/app/pdfexchanger/id6760964911)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### EchoPDF Ai

[App page](https://appshunter.io/ios/app/echopdf-ai/id6761255593)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PDFExchanger free?

PDFExchanger is free to download, with no in-app purchases.

### Is EchoPDF Ai free?

EchoPDF Ai is free to download, with no in-app purchases.

### Do PDFExchanger or EchoPDF Ai have ads?

PDFExchanger shows ads; EchoPDF Ai does not.

### Which is updated more often, PDFExchanger or EchoPDF Ai?

PDFExchanger ships an update every 2 weeks, and EchoPDF Ai monthly. Most recently, PDFExchanger was updated on September 15, 2026 and EchoPDF Ai on September 21, 2026.

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