# PDF Properties vs Marstak

The clearest difference is review sentiment: PDF Properties at 50% against Marstak's 0%. PDF Properties also leads on rating (4.5 vs 1.0). Marstak's advantage is price (Free vs $2.99) and iOS requirement (9.0 vs 12.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Marstak is free to download; PDF Properties costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PDF Properties holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 50% of PDF Properties's written reviews are positive against 0% of Marstak's.

PDF Properties ships an update every 4 months, Marstak every 3 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PDF Properties | Marstak |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/pdf-properties/id1459996508/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/marstak/id1586442404/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 8 MB | 78 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [Marstak Technology Pte Ltd](https://appshunter.io/developer/1586442406) |

## What reviewers say

### PDF Properties

[App page](https://appshunter.io/ios/app/pdf-properties/id1459996508)

View and edit metadata for your PDF files, including title, author, subject, keywords, and application. Protect your privacy by deleting sensitive property information before sharing documents. Access the PDF content directly from the properties screen.

**Highlights:** View PDF property information, Edit title, author, subject, keywords, application, Delete property information, Save edited properties, View PDF content, Read-only for protected PDFs

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

**In-app purchases:** none


### Marstak

[App page](https://appshunter.io/ios/app/marstak/id1586442404)

Take full command of your smart home cleaning devices. Create custom cleaning schedules, map your home, and define specific zones for targeted or restricted cleaning. Monitor your devices remotely for a spotless home.

**Highlights:** Smart mapping and room division, Customizable cleaning schedules, Zone and no-go zone definition, Multi-level floor mapping, Real-time remote monitoring, Adjustable suction power

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Properties free?

PDF Properties costs $2.99, with no in-app purchases.

### Is Marstak free?

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

### Which has better reviews, PDF Properties or Marstak?

PDF Properties is rated higher. PDF Properties averages 4.5 out of 5 from 2 ratings, while Marstak averages 1.0 from 1 ratings.

### Do PDF Properties or Marstak have ads?

Neither PDF Properties nor Marstak shows ads.

### Which is updated more often, PDF Properties or Marstak?

PDF Properties ships an update every 4 months, and Marstak every 3 months. Most recently, PDF Properties was updated on October 8, 2026 and Marstak on October 7, 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.*