# Dat Unpack vs Open MSG to PDF · Email Viewer

The clearest difference is update cadence: Open MSG to PDF · Email Viewer at every 10 days against Dat Unpack's every 2 months. Open MSG to PDF · Email Viewer also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Dat Unpack sells 1 one-off in-app purchase and Open MSG to PDF · Email Viewer sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Dat Unpack ships an update every 2 months, Open MSG to PDF · Email Viewer every 10 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Dat Unpack | Open MSG to PDF · Email Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 3 MB | 49 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ikhwan Noorsetyo](https://appshunter.io/developer/1739847271) | [OMER FARUK KIZILTUG](https://appshunter.io/developer/1870337585) |

## What reviewers say

### 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 |


### Open MSG to PDF · Email Viewer

[App page](https://appshunter.io/ios/app/open-msg-to-pdf-email-viewer/id6760991112)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $5.99 | per 7 days |
| Yearly Premium | $49.99 | per year |
| Lifetime Access | $149.99 | one-time |


## Frequently asked questions

### Is Dat Unpack free?

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

### Is Open MSG to PDF · Email Viewer free?

Open MSG to PDF · Email Viewer is free to download, with in-app purchases available.

### Do Dat Unpack or Open MSG to PDF · Email Viewer have ads?

Both Dat Unpack and Open MSG to PDF · Email Viewer show ads.

### Which is updated more often, Dat Unpack or Open MSG to PDF · Email Viewer?

Dat Unpack ships an update every 2 months, and Open MSG to PDF · Email Viewer every 10 days. Most recently, Dat Unpack was updated on October 28, 2026 and Open MSG to PDF · Email Viewer on October 28, 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.*