# PDF Masker vs Redact Zero

The clearest difference is review sentiment: Redact Zero at 100% against PDF Masker's 0%. Redact Zero also leads on rating (4.8 vs 2.0) and ads (none vs shown). PDF Masker's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (15.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Masker sells 1 one-off in-app purchase and Redact Zero sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Redact Zero holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Redact Zero has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of PDF Masker's written reviews are positive against 100% of Redact Zero's.

PDF Masker ships an update monthly, Redact Zero every 10 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PDF Masker | Redact Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/pdf-masker-secure-redaction/id6748043661/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/redact-zero/id6794126915/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 14 MB | 10 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) | [Logikal Mayhem LLC](https://appshunter.io/developer/6794126917) |

## What reviewers say

### PDF Masker

[App page](https://appshunter.io/ios/app/pdf-masker-secure-redaction/id6748043661)

Easily mask sensitive keywords in PDF files before sharing. Import PDFs, specify multiple keywords, and customize redaction colors. Export as text or image-based PDFs for secure data sharing.

**Highlights:** Import PDFs via Share menu, Bulk keyword redaction, Export as text or image PDF, Multiple keyword support, Customizable redaction color, Save keyword histories

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### Redact Zero

[App page](https://appshunter.io/ios/app/redact-zero/id6794126915)

Permanently hide sensitive information in documents with advanced redaction technology. This app flattens redactions directly into the image and re-scans to ensure data is unrecoverable. It offers automatic detection of PII and manual redaction tools, with all processing done on-device.

**Highlights:** Permanent redaction flattening, Automatic PII detection, On-device processing, Scan and import documents, Verified unrecoverable confirmation, Metadata stripping

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Redact Zero Pro Monthly | $1.99 | per month |
| Redact Zero Pro Annual | $9.99 | per year |
| Redact Zero Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is PDF Masker free?

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

### Is Redact Zero free?

Redact Zero is free to download, with in-app purchases available.

### Which has better reviews, PDF Masker or Redact Zero?

Redact Zero is rated higher. PDF Masker averages 2.0 out of 5 from 1 ratings, while Redact Zero averages 4.8 from 5 ratings.

### Do PDF Masker or Redact Zero have ads?

PDF Masker shows ads; Redact Zero does not.

### Which is updated more often, PDF Masker or Redact Zero?

PDF Masker ships an update monthly, and Redact Zero every 10 days. Most recently, PDF Masker was updated on October 15, 2026 and Redact Zero on October 5, 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.*