# PDF Reader vs AI Guard

The clearest difference is in-app purchases: PDF Reader at none against AI Guard's 2. PDF Reader also leads on rating (4.6 vs 4.2). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. AI Guard sells 2 in-app purchases, starting at $9.99 per 7 days. PDF Reader asks for nothing beyond the download.

PDF Reader holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 76 and 51 respectively.

PDF Reader ships an update every 6 days, AI Guard every 9 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | PDF Reader | AI Guard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (76 ratings)](https://appshunter.io/ios/app/pdf-reader-viewer/id6746119431/reviews)** | [4.2 (51 ratings)](https://appshunter.io/ios/app/ai-guard-smart-cleaner/id6788275095/reviews) |
| Number of ratings | **76** | 51 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 9 days |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 116 MB | 51 MB |
| Requires iOS | **16** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 9+ |
| Developer | [All About Housing LLC](https://appshunter.io/developer/1773925650) | [Hongkong Oaky Technology limited](https://appshunter.io/developer/6788275097) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-viewer/id6746119431)

This app provides a privacy-focused way to view, organize, and manage PDF files on your device. It offers tools for merging, splitting, securing documents, and converting images to PDF, all processed locally for enhanced data safety.

**Highlights:** View and organize PDF files, Merge and split PDFs, Secure documents with passwords, Convert images to PDF, Built-in document scanner, Local data processing for privacy

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

**In-app purchases:** none


### AI Guard

[App page](https://appshunter.io/ios/app/ai-guard-smart-cleaner/id6788275095)

This utility app helps you clean up your iPhone storage by identifying duplicate and large media files. It also offers privacy features to manage sensitive photos and checks for digital risks like unsafe Wi-Fi connections and suspicious links.

**Highlights:** Smart photo and video cleanup, Duplicate contact merging, Sensitive photo detection, Private media storage, Wi-Fi and URL safety checks, QR code scanning, Device status review

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Guard Pro – Weekly Access | $9.99 | per 7 days |
| AI Guard Pro – Weekly Access | $9.99 | per 7 days |


## Frequently asked questions

### Is PDF Reader free?

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

### Is AI Guard free?

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

### Which has better reviews, PDF Reader or AI Guard?

PDF Reader is rated higher. PDF Reader averages 4.6 out of 5 from 76 ratings, while AI Guard averages 4.2 from 51 ratings.

### Do PDF Reader or AI Guard have ads?

Both PDF Reader and AI Guard show ads.

### Which is updated more often, PDF Reader or AI Guard?

PDF Reader ships an update every 6 days, and AI Guard every 9 days. Most recently, PDF Reader was updated on October 25, 2026 and AI Guard 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.*