# HeaderX

> HeaderX (iPhone/iPad app by Gyuman Kim.)

- Source: https://appshunter.io/ios/app/headerx/id6790552565 (this page in markdown: same URL + `.md`)
- Developer: [Gyuman Kim](https://appshunter.io/developer/1120436841)
- Category: Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 1 MB
- Languages: English
- Released: 2026-07-15
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/headerx/id6790552565/reviews.md

## What is HeaderX?

HeaderX injects custom HTTP request headers into your Safari browsing session — the essential companion for web developers, API testers, and QA engineers.

Point HeaderX at your development environment, define your headers once, and flip them on whenever you need them. No proxy setup, no configuration files, no leaving the browser.

DEFINE HEADERS AS JSON
Describe your headers in a simple JSON editor — paste an entire set at once:

{"X-Debug-Mode": "enabled", "Authorization": "Bearer dev-token"}

Or use the array format to keep headers saved but individually switched off.

TWO VIEWS, ONE TOGGLE
Edit as raw JSON or flip to List view, where every header gets its own checkbox. The master toggle in the corner turns everything on or off instantly — your configuration stays saved either way.

REUSABLE PROFILES
Save named header sets — one per project, environment, or test scenario — and switch between them in two clicks.

FEATURES
• One-tap master toggle
• JSON editor and checkbox list views
• Per-header enable/disable
• Named profiles for quick switching
• Settings persist across browser restarts
• Works in Private Browsing (optional)

GOOD TO KNOW
Standard header names (Authorization, Accept-Language, User-Agent, and other HTTP-spec headers) are applied to all requests through Safari's native rule engine. Custom header names (X-My-Header and similar) are applied to fetch and XHR requests made by web pages — a Safari platform constraint on custom names in network rules. For typical API-debugging workflows, this covers exactly the requests you care about.

Headers apply to every site while the toggle is on — remember to switch off when you're done testing, especially with authentication headers.

PRIVACY FIRST
Everything stays on your device. HeaderX collects no data, phones home to no one, and contains no analytics. What you configure is nobody's business but yours.


## Version history (last 4 releases)

### 1.5 — 2026-08-28

What's New

  Profile Improvements
  - Fixed profile text handling to ensure profile names and content load correctly

  Better List View
  - Replaced modal dialogs with a more reliable deletion method that works better with Safari's interface
  - Improved add/remove header UI with inline fields and icon buttons for cleaner interaction

  Bug Fixes
  - Fixed version sync issue between Safari 1.4 host app and extension
  - Refined icon button styling for better visual consistency

  UI Refinements
  - Enhanced ghost icon button sizing for improved touchability
  - Updated list view edit button to icon-only style for a more compact interface
  - Improved visual feedback for header removal with consistent delete styling

### 1.3 — 2026-07-24

Toolbar status at a glance

Extension icon shows a green badge with the number of active headers when HeaderX is on
Icon switches to an active (green) state when enabled; clears when off
Smarter profiles

Profiles use a single searchable field — type to find or create a profile name
Selecting a saved profile loads its headers and applies them automatically (no Load button)
Apply updates live header injection; Save (icon) persists the current headers to the profile
Compact save and delete icon buttons next to the profile field
Warning before switching profiles if you have unsaved edits
Confirmation before deleting a profile
Header editing

Edit individual headers inline in List view (toggle, edit name/value, save or cancel)
Safari-specific

Toolbar badge still updates when rules apply, even if profile storage write fails intermittently
Non-standard headers still fall back to in-page injection for fetch/XHR when Safari rejects them via network rules

### 1.1 — 2026-07-16

Edit headers in place. Each header in the list now has an Edit button — change its name or value right in the list, without switching to the JSON view. Enter saves, Escape cancels, and duplicate or empty names are caught before saving.

### 1.0 — 2026-07-15

No release notes.

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## More apps by Gyuman Kim

- [GoBirdie](https://appshunter.io/ios/app/gobirdie/id6762627436)
- [한의학 사전](https://appshunter.io/ios/app/id6778127943)

All apps by Gyuman Kim: https://appshunter.io/developer/1120436841

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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 2026-09-03.*