Comparison

KeyVault Studio vs HeaderX

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KeyVault Studio

Features
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Azure Key Vault, without the portal: KeyVault Studio is the native client for Mac, iPhone and iPad. Your secrets, keys and certificates are well protected in Azure. Managing them just takes too many clicks in the portal. KeyVault Studio turns that into a real Apple app: fast, focused and secured with Face ID / Touch ID. Want to look around first? Demo mode opens the complete app with sample data, no Azure account needed. SECRETS ▸ Create, view, update and delete, every value behind Face ID / Touch ID ▸ Full version history with side-by-side comparison ▸ Content types for JSON, XML, connection strings and API keys ▸ The app warns before anything expires, with thresholds you choose ▸ Copied values clear themselves from the clipboard KEYS ▸ Create RSA, EC and HSM-backed keys ▸ Crypto Playground: encrypt, decrypt, sign, verify, wrap, unwrap ▸ Rotation policies and one-tap rotation ▸ Import from JSON Web Key CERTIFICATES ▸ Issue self-signed and CA-signed certificates ▸ Import PFX/P12 and PEM, export the public certificate or the private key ▸ Manage policies, issuers, contacts and pending operations NETWORKING ▸ Configure the vault firewall, VNet rules and private endpoints ▸ Manage private DNS zones, record sets and VNet links ▸ Approve or reject private endpoint connections VAULTS ▸ Find vaults across all your Subscriptions in seconds ▸ Create a new vault with a guided wizard ▸ Backup and restore, AES-GCM encrypted if you want ▸ Recover or purge soft-deleted vaults and items AI ASSISTANT ▸ Ask questions about your own infrastructure: what expires soon, what is disabled ▸ Runs fully on device if you want: Apple Intelligence or Gemma, no cloud required ▸ Or bring your own key: Claude, OpenAI, Gemini, plus Ollama on your own network ▸ Naming suggestions per Cloud Adoption Framework, subnet and address space planning ▸ The assistant sees names and metadata, never secret values ▸ A visible token budget keeps API costs under control BUILT FOR APPLE PLATFORMS ▸ Mac, iPhone and iPad with the same feature set, tuned per size class ▸ Lightning-fast search across every vault and item, right on the device ▸ Several accounts side by side: Azure Commercial, US Government and China clouds ▸ No middleman servers: the app talks directly to Azure with your Microsoft Entra ID sign-in Bring your own app registration or use the built-in one. Your secrets never leave your device except to Azure.

About

HeaderX

Features
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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.

Screenshots

KeyVault Studio4 screens
HeaderX4 screens

Verdict

The call

The clearest difference is update cadence: KeyVault Studio at daily against HeaderX's every 8 days. HeaderX's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

KeyVault Studio ships an update daily, HeaderX every 8 days. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

Scorecard2 real differences · 4 level
KeyVault Studio versus HeaderX: the parameters behind the verdict, then further details
ParameterKeyVault StudioHeaderX
PriceFreeFree
Update frequencyDaily — betterEvery 8 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, MaciPhone, iPad, iPod, Mac — better
Requires iOS26.015.0 — better
Further details — not scored
Size35 MB1 MB
Age rating4+4+
DeveloperStephan BailGyuman Kim

In-app purchases

None

KeyVault Studio

No in-app purchases

None

HeaderX

No in-app purchases

Questions

Is KeyVault Studio free?
KeyVault Studio is free to download, with no in-app purchases.
Is HeaderX free?
HeaderX is free to download, with no in-app purchases.
Do KeyVault Studio or HeaderX have ads?
Neither KeyVault Studio nor HeaderX shows ads.
Which is updated more often, KeyVault Studio or HeaderX?
KeyVault Studio ships an update daily, and HeaderX every 8 days. Most recently, KeyVault Studio was updated on September 24, 2026 and HeaderX on September 16, 2026.

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