Pocket VHDL vs HeaderX
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Pocket VHDL
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Pocket VHDL is an offline VHDL code editor for iPhone and iPad. Open, edit, and save .vhd and .vhdl documents through the Files interface. Syntax highlighting distinguishes keywords, types, strings, numbers, and comments, while document-aware completion helps you reuse declarations from the source you are editing. Features ⢠Create, open, edit, and save .vhd and .vhdl documents ⢠Highlight VHDL keywords, types, strings, numbers, and comments ⢠Complete signals, variables, constants, types, and VHDL language items ⢠Find, move between results, replace, and replace all ⢠Show line numbers and go directly to a line ⢠Navigate entities, architectures, processes, and declarations in the symbol outline ⢠Use automatic indentation and paired brackets or quotes ⢠Access a mobile coding toolbar and hardware keyboard shortcuts ⢠Adjust font size, tab width, and editing behavior ⢠Work in portrait or landscape on iPhone and iPad Pocket VHDL requires no account and includes no advertising or user tracking. Document contents are not sent to a developer-operated server. The current version focuses on code editing and does not compile or simulate VHDL.
HeaderX
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HeaderX injects custom HTTP request headers into your Safari browsing session ā 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 ā 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 ā your configuration stays saved either way. REUSABLE PROFILES Save named header sets ā one per project, environment, or test scenario ā 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 ā 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 ā 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.
Screenshots
Verdict
The clearest difference is device support: HeaderX at 4 against Pocket VHDL's 2. HeaderX also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Pocket VHDL | HeaderX |
|---|---|---|
| Price | Free | Free |
| Update frequency | ā | Every 8 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac ā better |
| Requires iOS | 17.0 | 15.0 ā better |
| Further details ā not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ki youn ryu | Gyuman Kim |
In-app purchases
Pocket VHDL
No in-app purchases
HeaderX
No in-app purchases









