JS Server vs JS Shell

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

JS Shell is a pocket-sized developer console that lets you write, run, and test web code (HTML, CSS, JavaScript) directly on iOS and macOS. No Xcode, no laptop, no remote server. Paste a page in, tap run, and it loads in a real WKWebView served from a local HTTP origin. A real secure-context origin on iOS, so modern web APIs — from WebRTC to Geolocation — behave the way they should. KEY FEATURES Local HTTP server. An in-process server bound to the loopback interface. Provides a real secure-context origin so modern Web APIs work out of the box. Not reachable from outside the device. JavaScript REPL. A full JavaScript runtime backed by JavaScriptCore. Type js to enter the REPL. console.log, fetch, setTimeout, setInterval, Promises, and async await are all available. Real Promises, real microtasks, real JSON parsing, real URL parsing. Geolocation support. Test navigator.geolocation on a real iOS device. Permissions are handled by the system, just like Safari. Useful for validating location-based web features without deploying to a server. Persistent file system. Files you paste live in your Documents directory and survive app restarts. Each downloaded package gets its own directory. iCloud backup picks them up like any other app data. SQLite key-value store. A real B-tree on disk via SQLite. Read and write from your pages with same-origin fetch. No CORS configuration required. curl. A subset of curl built on URLSession. The flags X, H, d, i, I, o, A, m, v are supported. Pretty-prints JSON responses and saves binary blobs to the virtual filesystem. Archive extraction. In-process tar, tar.gz, tgz, gz, and zip extraction. No shelling out. Download a release tarball with curl, extract it, and run it immediately. Voice commands. Tap the mic, speak a command. Apple Speech framework converts speech to text. Auto-submits on detected silence. Voice commands are saved to the scripts list for one-tap re-run. Saved scripts. Save any sequence of commands as a named script. One-tap to re-run later. Voice-recognized commands are auto-saved to the scripts list for instant replay. Mac Catalyst support. Runs natively on macOS as a Mac Catalyst app. Multi-window, resizable, fullscreen-capable. The same code that runs on your iPhone runs on your Mac. DESIGNED FOR DEVELOPERS JS Shell is a tool for people who want to test web code on a real iOS device without installing Xcode, syncing files, or setting up a tunnel. It is especially useful for: Testing geolocation, camera, and microphone permission flows on iOS. Validating fetch, CORS, and cookie behavior on a real iPhone. Building small offline web tools that need persistent state. Running JavaScript snippets without opening Safari Inspector. Debugging mobile rendering edge cases on the device itself. PRIVACY JS Shell does not collect any user data. There is no telemetry, no ads, no analytics, no third-party SDKs, no remote configuration. Everything you type, paste, or download stays on your device. The local HTTP server only listens on the loopback interface and is not reachable from any network. The app forwards camera, microphone, speech recognition, and location permissions to web pages you load, exactly like Safari does on macOS. The first time a page tries to use them, iOS shows the standard system permission prompt. The first time a page tries to use them, iOS shows the standard system permission prompt.