# I vs PDF Tools

The clearest difference is in-app purchases: I at none against PDF Tools's 1. I also leads on iOS requirement (8.0 vs 15.5). PDF Tools's advantage is update cadence (every 3 days vs every 9 days). On price, ads and device support there is nothing between them.

Both are free to download. PDF Tools sells 1 one-off in-app purchase. I asks for nothing beyond the download.

I ships an update every 9 days, PDF Tools every 3 days. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | I | PDF Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/i-usbkey-pro/id1258469579/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 40 MB | 52 MB |
| Requires iOS | **8.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [zhong qibiao](https://appshunter.io/developer/1118837284) | [Ebin Joy](https://appshunter.io/developer/1894429126) |

## What reviewers say

### I

[App page](https://appshunter.io/ios/app/i-usbkey-pro/id1258469579)

Manage all your files on iOS devices with ease. This app allows you to exchange files between different devices and platforms, back up contacts and camera roll, and play media directly from your device. It supports a wide range of document, image, audio, and video file formats.

**Highlights:** File management for iOS devices, Cross-device file exchange, Contact and camera roll backup, Video and music playback, Image and document preview, Support for various file formats

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Tools

[App page](https://appshunter.io/ios/app/pdf-tools-offline/id6770051266)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Toolkit PRO | $9.99 | one-time |


## Frequently asked questions

### Is I free?

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

### Is PDF Tools free?

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

### Do I or PDF Tools have ads?

Neither I nor PDF Tools shows ads.

### Which is updated more often, I or PDF Tools?

I ships an update every 9 days, and PDF Tools every 3 days. Most recently, I was updated on October 22, 2026 and PDF Tools on October 25, 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.*