# Fast MSG vs MBOX Reader · Opener · Convert

The clearest difference is update cadence: MBOX Reader · Opener · Convert at every 3 days against Fast MSG's every 12 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Fast MSG sells 1 one-off in-app purchase and MBOX Reader · Opener · Convert sells 7 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fast MSG ships an update every 12 months, MBOX Reader · Opener · Convert every 3 days. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Fast MSG | MBOX Reader · Opener · Convert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mbox-reader-opener-convert/id6777394850/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 13 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Claudio Guirunas](https://appshunter.io/developer/1149103410) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### Fast MSG

[App page](https://appshunter.io/ios/app/fast-msg/id6748307210)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.29 | one-time |


### MBOX Reader · Opener · Convert

[App page](https://appshunter.io/ios/app/mbox-reader-opener-convert/id6777394850)

Easily open, read, and search large MBOX email archives on your Apple devices. Convert emails to various formats like PDF, CSV, or JSON, and extract contacts. All processing happens offline for maximum privacy.

**Highlights:** Open MBOX and MBX archives, Read emails with attachments, Full text search, Export attachments to ZIP, Convert to PDF, CSV, JSON, Extract contacts as vCards, Offline functionality

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Weekly | $9.99 | per 7 days |
| Pro Annual | $19.99 | per year |
| Pro Annual | $29.99 | per year |
| Pro Annual | $39.99 | per year |
| Pro Annual | $49.99 | per year |
| Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is Fast MSG free?

Fast MSG is free to download, with in-app purchases available.

### Is MBOX Reader · Opener · Convert free?

MBOX Reader · Opener · Convert is free to download, with in-app purchases available.

### Do Fast MSG or MBOX Reader · Opener · Convert have ads?

Neither Fast MSG nor MBOX Reader · Opener · Convert shows ads.

### Which is updated more often, Fast MSG or MBOX Reader · Opener · Convert?

Fast MSG ships an update every 12 months, and MBOX Reader · Opener · Convert every 3 days. Most recently, Fast MSG was updated on September 21, 2026 and MBOX Reader · Opener · Convert on September 22, 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.*