# EML & MSG Email File Viewer vs HeaderCheck

The clearest difference is update cadence: HeaderCheck at fortnightly against EML & MSG Email File Viewer's monthly. EML & MSG Email File Viewer's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. EML & MSG Email File Viewer sells 3 in-app purchases, starting at $1.00 per 7 days and HeaderCheck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

EML & MSG Email File Viewer ships an update monthly, HeaderCheck fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | EML & MSG Email File Viewer | HeaderCheck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 18 MB | 2 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sheenu Jain](https://appshunter.io/developer/6784692835) | [Nicholas McLarty](https://appshunter.io/developer/1572125539) |

## What reviewers say

### EML & MSG Email File Viewer

[App page](https://appshunter.io/ios/app/eml-and-msg-email-file-viewer/id6795544592)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro — Weekly | $1.00 | per 7 days |
| Pro — Yearly | $7.99 | per year |
| Pro — Lifetime | $9.99 | one-time |


### HeaderCheck

[App page](https://appshunter.io/ios/app/headercheck/id6809026356)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HeaderCheck Pro | $2.99 | one-time |


## Frequently asked questions

### Is EML & MSG Email File Viewer free?

EML & MSG Email File Viewer is free to download, with in-app purchases available.

### Is HeaderCheck free?

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

### Do EML & MSG Email File Viewer or HeaderCheck have ads?

Neither EML & MSG Email File Viewer nor HeaderCheck shows ads.

### Which is updated more often, EML & MSG Email File Viewer or HeaderCheck?

EML & MSG Email File Viewer ships an update monthly, and HeaderCheck fortnightly. Most recently, EML & MSG Email File Viewer was updated on October 31, 2026 and HeaderCheck on October 31, 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.*