Bluetooth Developer vs JS Server
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bluetooth Developer
Explore and understand Bluetooth devices around you. Discover nearby devices, view their manufacturer data and signal strength, and connect to read out information. Identify device types and potential manufacturers before connecting.
- Find nearby Bluetooth devices
- View manufacturer data and signal strength
- Connect and read device data
- Identify device types
- Read advertisement data
- Analyze services and characteristics
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The Bluetooth Developer App is made to help you developing with Bluetooth devices and understanding how they work. You can: - Find & see nearby devices - View manufacturer data and signal strength - Connect and read out data - See before connecting if a device is possible an apple device - See what kind of device (TV, Headphones, Heartbeat-Sensor, Monitor) a device is before connecting - Read out advertisement data - See information about services and characteristics - Read out characteristic values and parse them Requires permission to use Bluetooth features of your device.
JS Server
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Server turns your iPhone or iPad into a developer-friendly HTTP host. Point a listener at a file and it gets served. Write JavaScript and it runs. WHAT YOU CAN DO Serve static files Pick a file from the Files app, or edit one inline. Custom Content-Type per listener. A default HTML page is provided for quick smoke tests. Write JavaScript routes Every JavaScript listener gets an Express-like surface running inside JavaScriptCore. Register routes with server.get, server.post, server.all, and respond with res.html, res.json, res.text, res.send. Set status and headers fluently. No Node dependency. Your code evaluates on device. Read and write files from JS A sandboxed fs module is bridged through Swift: readFile, writeFile, exists, mkdir, readdir, unlink, stat. Every listener gets its own private directory. Any path that tries to escape the sandbox is rejected. Call external APIs Outbound fetch is bridged too. Pass a URL, optionally a method, headers, or a body, and get back status, ok, headers, text, and json. Perfect for proxies, webhooks, or quick integrations. Run multiple listeners at once Each listener runs on its own port, started and stopped independently. Bonjour advertises them on your local network so peers can find them by name. Live Activities A listener running in the background shows up in the Dynamic Island and on the Lock Screen with the port and request count. Inspect every request The Console panel logs every HTTP request, every console.log, and every runtime error. Tap an HTTP row to expand the full request (method, URL, headers, body) and response (status, headers, body, timing). Syntax highlighting In-app editor with an IDE-style dark theme for JavaScript, Python, and HTML. WHO IT IS FOR Developers prototyping APIs on the go. QA engineers testing mobile clients against a controllable backend. Anyone who needs to serve a JSON blob, a mock endpoint, or a small HTML page from their iPad without setting up a real server. PRIVACY No accounts, no telemetry, no analytics. Nothing leaves the device except the HTTP responses you explicitly send. All code, data, and logs live in your app sandbox. Questions or feedback: server@cyber-man.pl
Screenshots
Verdict
The clearest difference is price: Bluetooth Developer at Free against JS Server's $4.99. JS Server's advantage is update cadence (daily vs every 3 months). On ads, in-app purchases, device support and iOS requirement 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
Bluetooth Developer is free to download; JS Server costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Bluetooth Developer ships an update every 3 months, JS Server daily. The most recent releases landed on September 30, 2026 and September 16, 2026 respectively.
| Parameter | Bluetooth Developer | JS Server |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.0 (7 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 3 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthias Zarzecki | Tomasz Dbrowski |
In-app purchases
Bluetooth Developer
No in-app purchases
JS Server
No in-app purchases
Questions
Is Bluetooth Developer free?
Is JS Server free?
Do Bluetooth Developer or JS Server have ads?
Which is updated more often, Bluetooth Developer or JS Server?
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