# PDF Master vs Security Master

PDF Master and Security Master both sit at 4.3 stars, but that hides the real split: 55% of Security Master's written reviews are positive against 9% of PDF Master's. Security Master also leads on monetization model (free with in-app purchases vs subscription) and ratings volume (4K vs 200). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. PDF Master sells 12 in-app purchases, starting at $0.99 per 7 days and Security Master sells 2 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.3 for PDF Master against 4.4 for Security Master. That said, the two scores are not equally well evidenced: Security Master has 4K ratings behind it against 200, so its average is the more settled of the two. Written reviews are what separate them: 9% of PDF Master's written reviews are positive against 55% of Security Master's.

PDF Master ships an update every 2 weeks, Security Master every 11 days. The most recent releases landed on September 27, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | PDF Master | Security Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (200 ratings)](https://appshunter.io/ios/app/pdf-master-editor-reader/id6471487318/reviews) | **[4.4 (4K ratings)](https://appshunter.io/ios/app/security-master-data-privacy/id6504529234/reviews)** |
| Number of ratings | 200 | **4K** |
| Positive reviews | 9.1% of reviews | **55.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 119 MB | 20 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [CheeseJoy Apps](https://appshunter.io/developer/1727983156) | [Mobiwave Limited](https://appshunter.io/developer/1752684803) |

## What reviewers say

### PDF Master

[App page](https://appshunter.io/ios/app/pdf-master-editor-reader/id6471487318)

This app offers a comprehensive suite of tools for managing PDF documents on iOS. It allows users to scan physical documents and gallery images into PDFs, create new PDFs from scratch, view existing files, merge multiple PDFs, and extract text using OCR technology.

**Highlights:** Scan photos to PDF, Convert gallery images to PDF, Create new PDF files, View and read PDF documents, Merge multiple PDF files, OCR text recognition

**Features:** macOS Compatibility

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Master | $0.99 | per 7 days |
| weekly | $4.99 | per 7 days |
| PDF Master PRO 1 Week | $5.99 | per 7 days |
| PDF Master PRO 1 Week | $5.99 | per 7 days |
| PDF Master PRO 1 Week | $5.99 | per 7 days |
| PDF Master PRO 1 Week | $9.99 | per 7 days |
| PDF Master PRO 1 Week | $9.99 | per 7 days |
| Monthly Pro | $9.99 | per month |
| PDF Master PRO 1 Year | $29.99 | per year |
| PDF Master PRO 1 Year | $34.99 | per year |
| PDF Master PRO 1 Year | $39.99 | per year |
| PDF Master Pro | $19.99 | one-time |


### Security Master

[App page](https://appshunter.io/ios/app/security-master-data-privacy/id6504529234)

Protect your personal information and enhance your online activity. This app offers privacy checks, data leak alerts, secure storage for sensitive files, and a protected browsing experience. Keep your digital life safe and your browsing uninterrupted.

**Highlights:** Privacy Checkup, Data Leaks Check, Safe Storage for Files, Secure Browser, Malicious Sites Blocking, Tracker and Ad Blocking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trial Premium Weekly | $8.99 | per 7 days |
| Premium Yearly | $49.99 | per year |

**What reviewers like**

- 🚀 Fast app
- 🔒 Provides security
- 👍 Helpful app

**What reviewers complain about**

- 🐛 Bugs and glitches
- 💰 Paid subscription
- 🤔 Confusing for some users

**Reported bugs**

- Login issues
- Compatibility problems

**Requested features**

- More help and guidance for users
- Free trial period


## Frequently asked questions

### Is PDF Master free?

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

### Is Security Master free?

Security Master is free to download, with in-app purchases available.

### Which has better reviews, PDF Master or Security Master?

Security Master is rated higher. PDF Master averages 4.3 out of 5 from 200 ratings, while Security Master averages 4.4 from 4K ratings.

### Do PDF Master or Security Master have ads?

Both PDF Master and Security Master show ads.

### Which is updated more often, PDF Master or Security Master?

PDF Master ships an update every 2 weeks, and Security Master every 11 days. Most recently, PDF Master was updated on September 27, 2026 and Security Master on October 3, 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.*