# PDF Dark vs Dat Unpack

The clearest difference is price: Dat Unpack at Free against PDF Dark's $3.99. Dat Unpack also leads on update cadence (every 2 months vs every 11 months). PDF Dark's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Dat Unpack is free to download; PDF Dark costs $3.99 up front. Dat Unpack sells 1 one-off in-app purchase. PDF Dark asks for nothing beyond the download.

PDF Dark ships an update every 11 months, Dat Unpack every 2 months. The most recent releases landed on August 25, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | PDF Dark | Dat Unpack |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/pdf-dark/id6470178025/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 1 MB | 3 MB |
| Requires iOS | 17.6 | **17.5** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lucioni Charalla](https://appshunter.io/developer/1198674844) | [Ikhwan Noorsetyo](https://appshunter.io/developer/1739847271) |

## What reviewers say

### PDF Dark

[App page](https://appshunter.io/ios/app/pdf-dark/id6470178025)

Transform bright PDF pages into a comfortable dark mode for easier reading at night. Reduce eye strain, improve focus, and potentially save battery life. Enjoy a smoother reading experience on your devices.

**Highlights:** Dark mode for PDFs, Reduced eye strain, Improved focus, Battery saving, Multi-device support

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

**In-app purchases:** none


### Dat Unpack

[App page](https://appshunter.io/ios/app/dat-unpack-winmail-viewer/id6743018127)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is PDF Dark free?

PDF Dark costs $3.99, with no in-app purchases.

### Is Dat Unpack free?

Dat Unpack is free to download, with in-app purchases available.

### Do PDF Dark or Dat Unpack have ads?

Dat Unpack shows ads; PDF Dark does not.

### Which is updated more often, PDF Dark or Dat Unpack?

PDF Dark ships an update every 11 months, and Dat Unpack every 2 months. Most recently, PDF Dark was updated on August 25, 2026 and Dat Unpack on June 1, 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.*