Comparison

Murmur BLE Shell vs HeaderX

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

Head to head
About

Murmur BLE Shell

Features
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murmur turns your phone into a remote control for a Raspberry Pi โ€” no Wi-Fi, no network setup, no port forwarding. Just Bluetooth Low Energy (BLE), directly between your phone and the Pi. HOW IT WORKS Install the open-source murmur daemon on any Raspberry Pi running Linux, pair your phone with it over Bluetooth, and you get: โ€ข Shell mode โ€” a real interactive terminal on the Pi, right from your phone. โ€ข Agent mode โ€” describe what you want in plain English ("what's eating my disk space?", "set up a static IP") and an AI agent plans and runs the shell commands for you, showing every command and its output as it goes. BRING YOUR OWN API KEY Agent mode is powered by your own Anthropic Claude, OpenAI, or Google Gemini API key โ€” entered once in Settings, stored only in your phone's secure keychain. murmur has no backend server and no account system. The only network calls it makes are the LLM requests you trigger yourself, using your own key. WORKS OFFLINE ON THE PI SIDE The Raspberry Pi never needs an internet connection. It just needs Bluetooth and the murmur daemon running. Good for headless boxes, home labs, and devices you'd rather not put on a network at all. PRIVACY BY DESIGN Everything murmur stores โ€” the Bluetooth pairing key, your API key, an optional per-device sudo password, and saved agent conversations โ€” stays on your phone in the OS-level secure store. One tap in Settings wipes it all. OPEN SOURCE Both the daemon and the app are open source: github.com/nekonihq/murmur

About

HeaderX

Features
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HeaderX injects custom HTTP request headers into your Safari browsing session โ€” 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 โ€” 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 โ€” your configuration stays saved either way. REUSABLE PROFILES Save named header sets โ€” one per project, environment, or test scenario โ€” and switch between them in two clicks. FEATURES โ€ข One-tap master toggle โ€ข JSON editor and checkbox list views โ€ข Per-header enable/disable โ€ข Named profiles for quick switching โ€ข Settings persist across browser restarts โ€ข 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 โ€” 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 โ€” 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

Murmur BLE Shell4 screens
HeaderX4 screens

Verdict

The call

The clearest difference is device support: HeaderX at 4 against Murmur BLE Shell's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Murmur BLE Shell ships an update every 6 days, HeaderX every 8 days. Both last shipped on September 16, 2026.

Scorecard1 real difference ยท 5 level
Murmur BLE Shell versus HeaderX: the parameters behind the verdict, then further details
ParameterMurmur BLE ShellHeaderX
PriceFreeFree
Update frequencyEvery 6 days โ€” betterEvery 8 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod, Mac โ€” better
Requires iOS15.115.0 โ€” better
Further details โ€” not scored
Size42 MB1 MB
Age rating4+4+
DeveloperDENYS MALYKHINGyuman Kim

In-app purchases

None

Murmur BLE Shell

No in-app purchases

None

HeaderX

No in-app purchases

Questions

Is Murmur BLE Shell free?
Murmur BLE Shell is free to download, with no in-app purchases.
Is HeaderX free?
HeaderX is free to download, with no in-app purchases.
Do Murmur BLE Shell or HeaderX have ads?
Neither Murmur BLE Shell nor HeaderX shows ads.
Which is updated more often, Murmur BLE Shell or HeaderX?
Murmur BLE Shell ships an update every 6 days, and HeaderX every 8 days. Most recently, Murmur BLE Shell was updated on September 16, 2026 and HeaderX on September 16, 2026.

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