# PDF Scanner & Sign Documents vs 4invoice

The clearest difference is in-app purchases: 4invoice at none against PDF Scanner & Sign Documents's 2. 4invoice also leads on device support and iOS requirement (15.1 vs 18). On price there is nothing between them.

Both are free to download. PDF Scanner & Sign Documents sells 2 in-app purchases, starting at $2.99 per month. 4invoice asks for nothing beyond the download.

## The numbers

| Metric | PDF Scanner & Sign Documents | 4invoice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 3 months |
| Size | 6 MB | 31 MB |
| Requires iOS | 18 | **15.1** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stas Foltea](https://appshunter.io/developer/1861812130) | [Cuspy Software LLC](https://appshunter.io/developer/1538914569) |

## What reviewers say

### PDF Scanner & Sign Documents

[App page](https://appshunter.io/ios/app/pdf-scanner-and-sign-documents/id6751502371)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $19.99 | per year |


### 4invoice

[App page](https://appshunter.io/ios/app/4invoice/id6759964957)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Scanner & Sign Documents free?

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

### Is 4invoice free?

4invoice is free to download, with no in-app purchases.

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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.*