# HeaderCheck — Auth verdicts on your device.

> Auth verdicts on your device. (iPhone/iPad app by Nicholas McLarty.)

- Source: https://appshunter.io/ios/app/headercheck/id6809026356 (this page in markdown: same URL + `.md`)
- Developer: [Nicholas McLarty](https://appshunter.io/developer/1572125539)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 2 MB
- Languages: American English, Arabic, French (France), Swiss High German, Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2026-09-10
- Data updated: 2026-09-16
- User reviews in markdown: https://appshunter.io/ios/app/headercheck/id6809026356/reviews.md

## What is HeaderCheck?

HeaderCheck turns raw email authentication headers into clear SPF, DKIM, and DMARC verdicts, entirely on your iPhone or iPad.

Paste headers, open a sample, or import an .eml (Pro). No account. No upload. Analysis never leaves this device.

WHY IT MATTERS
Phishing often fakes the From line. Authentication results in the headers show whether the sending domain actually passed SPF, DKIM, and DMARC. HeaderCheck makes those fields readable.

HOW TO USE
• Paste raw headers from “Show original” / “View source”
• Or forward as attachment and open the .eml (Pro)
• Read Pass / Fail / Softfail badges and heuristic flags
• Copy a summary or export a PDF (Pro)

FREE
Paste analysis, badges, copy summary, and a rolling history of your latest analyses.

PRO (one-time)
PDF export, unlimited history, and .eml import / Share Sheet open.

HeaderCheck reports what is in the headers you provide. It does not guarantee a message is safe or malicious, and it is not legal or forensic advice.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 2 releases)

### 1.0.1 — 2026-09-11

UI polish, added language support for over 15 languages and localizations for Brazil, China, and Taiwan, minor bug fixes.

### 1.0 — 2026-09-10

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-16.*