# PDF AI vs Document Signer

The clearest difference is in-app purchases: Document Signer at none against PDF AI's 6. Document Signer also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.5). On price and device support there is nothing between them.

Both are free to download. PDF AI sells 6 in-app purchases, starting at $9.99 per month. Document Signer asks for nothing beyond the download.

## The numbers

| Metric | PDF AI | Document Signer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | — |
| Size | 142 MB | 31 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Saad Ameen](https://appshunter.io/developer/1680660990) | [GENWIZZ SOLUTIONS (SMC-PRIVATE) LIMITED](https://appshunter.io/developer/1894858350) |

## What reviewers say

### PDF AI

[App page](https://appshunter.io/ios/app/pdf-ai-edit-read-and-analyse/id6763019243)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly Subscription | $9.99 | per month |
| Remove Ads Forever | $9.99 | one-time |
| 1500 AI Credits | $9.99 | one-time |
| 2500 AI Credits | $14.99 | one-time |
| 4000 AI Credits | $19.99 | one-time |
| 10000 AI Credits | $29.99 | one-time |


### Document Signer

[App page](https://appshunter.io/ios/app/document-signer-esign-pdf/id6765672581)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF AI free?

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

### Is Document Signer free?

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

### Do PDF AI or Document Signer have ads?

PDF AI shows ads; Document Signer does not.

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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.*