# MBOX Viewer vs SmartDecrypt PDF ZIP

The clearest difference is update cadence: MBOX Viewer at every 5 days against SmartDecrypt PDF ZIP's every 4 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MBOX Viewer sells 3 in-app purchases, starting at $3.99 per 7 days and SmartDecrypt PDF ZIP sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

MBOX Viewer ships an update every 5 days, SmartDecrypt PDF ZIP every 4 weeks. Both last shipped on October 18, 2026.

## The numbers

| Metric | MBOX Viewer | SmartDecrypt PDF ZIP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/mbox-viewer-email-file-reader/id6760871775/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 weeks |
| Monetization | Subscription | — |
| Size | 24 MB | 8 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [延平 陈](https://appshunter.io/developer/1833168926) | [KIEN WEI CHOO](https://appshunter.io/developer/1872314467) |

## What reviewers say

### MBOX Viewer

[App page](https://appshunter.io/ios/app/mbox-viewer-email-file-reader/id6760871775)

Easily open, convert, and export MBOX email archives to various formats like PDF, EML, HTML, or TXT. This app offers fast performance for large files, batch conversion, and robust search capabilities. It prioritizes user privacy with 100% offline functionality and no account requirement.

**Highlights:** MBOX to PDF, EML, HTML, TXT conversion, Batch email export, Fast performance for large archives, Search and filter emails, View and extract attachments, Cross-device access with one subscription, 100% offline functionality

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Premium Yearly | $9.99 | per year |
| MBOX Viewer & Converter Premium | $19.99 | one-time |


### SmartDecrypt PDF ZIP

[App page](https://appshunter.io/ios/app/smartdecrypt-pdf-zip/id6763979229)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Days Trial | Free | one-time |
| SmartDecrypt Premium | $9.99 | one-time |


## Frequently asked questions

### Is MBOX Viewer free?

MBOX Viewer is free to download, with in-app purchases available.

### Is SmartDecrypt PDF ZIP free?

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

### Do MBOX Viewer or SmartDecrypt PDF ZIP have ads?

Neither MBOX Viewer nor SmartDecrypt PDF ZIP shows ads.

### Which is updated more often, MBOX Viewer or SmartDecrypt PDF ZIP?

MBOX Viewer ships an update every 5 days, and SmartDecrypt PDF ZIP every 4 weeks. Most recently, MBOX Viewer was updated on October 18, 2026 and SmartDecrypt PDF ZIP on October 18, 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.*