# Door Inspector AI vs PDF Tools +

The clearest difference is device support: Door Inspector AI at 3 against PDF Tools +'s —. Door Inspector AI also leads on iOS requirement (15.6 vs 17.6). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Door Inspector AI | PDF Tools + |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Weekly | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [TPN LABS S.R.L.](https://appshunter.io/developer/1646937387) | [Abdulrahman Alfantokh](https://appshunter.io/developer/1758833961) |

## What reviewers say

### Door Inspector AI

[App page](https://appshunter.io/ios/app/door-inspector-ai/id6751585665)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Tools +

[App page](https://appshunter.io/ios/app/pdf-tools-plus/id6766302131)

**In-app purchases:** none


## Frequently asked questions

### Is Door Inspector AI free?

Door Inspector AI is free to download, with no in-app purchases.

### Is PDF Tools + free?

PDF Tools + 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.*