# Sign Documents vs PDFX

The clearest difference is ads: Sign Documents at none against PDFX's shown. Sign Documents also leads on update cadence (daily vs weekly) and iOS requirement (13.0 vs 16.4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Sign Documents sells 2 in-app purchases, starting at $6.99 per 7 days and PDFX sells 2 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Sign Documents ships an update daily, PDFX weekly. The most recent releases landed on October 31, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Sign Documents | PDFX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Weekly |
| Size | 42 MB | 64 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OLLY ADAMS](https://appshunter.io/developer/6772702499) | [YOU SEUNGMIN](https://appshunter.io/developer/1884590037) |

## What reviewers say

### Sign Documents

[App page](https://appshunter.io/ios/app/sign-documents-signedge/id6772702497)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $6.99 | per 7 days |
| Premium Subscription | $49.99 | per year |


### PDFX

[App page](https://appshunter.io/ios/app/pdfx-editor-reader-and-signer/id6815243882)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFX Pro Monthly | $0.49 | per month |
| PDFX Pro Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is Sign Documents free?

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

### Is PDFX free?

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

### Do Sign Documents or PDFX have ads?

PDFX shows ads; Sign Documents does not.

### Which is updated more often, Sign Documents or PDFX?

Sign Documents ships an update daily, and PDFX weekly. Most recently, Sign Documents was updated on October 31, 2026 and PDFX on October 26, 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.*