Comparison

DexRelay vs JS Shell

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

Head to head
About

DexRelay

Features
Read full description

DexRelay puts your Mac coding agents in your pocket. Control Codex and Claude Code from iPhone, switch agents inside the same project, approve commands, steer active runs, use plugins and image generation, and keep work moving while your source code stays on your own Mac. BUILT FOR CODEX AND CLAUDE CODE BUILDERS DexRelay is designed for developers who run Codex, Claude Code, or adjacent coding agents on a Mac and want mobile control. Create threads, send prompts, queue follow-ups, and steer work mid-task from your iPhone. Watch progress with a live transcript and concise status updates. SWITCH AGENTS, KEEP THE PROJECT Use Codex for one task and Claude Code for the next without duplicating repos or setup. DexRelay keeps threads grouped by the same Mac folder, with shared project actions, todos, runbooks, file context, and build controls. APPROVE FROM ANYWHERE Do not let a coding session stall because you stepped away. Approve or deny file changes and shell commands directly from the app or from iOS notifications, including Live Activities and Dynamic Island. MAC-SIDE BUILD WORKFLOWS Trigger Xcode and project runbook actions on your paired Mac. DexRelay can show build logs, status, and Mac-hosted build pages for developer workflows. The iPhone app is a companion/controller; builds are created by Xcode on the user's Mac and remain subject to Apple's normal signing and provisioning rules. PROJECTS, THREADS, AND RUNBOOKS Organize work across Mac repos. Each project can have its own Codex threads, Claude Code threads, todos, runbook actions, governance notes, and skills. Rename projects with phone-friendly display names without changing folder names on disk. PLUGINS AND IMAGE GENERATION Use supported Codex plugins and image-generation workflows from your phone when the matching Mac runtime is available. DexRelay lets you steer those agent tools without returning to a terminal. BOOTSTRAP PROJECTS FROM PHONE Start iOS, macOS, and web project scaffolds from iPhone in seconds, then continue the same work through threads, todos, runbooks, and approvals. FILE BROWSER AND ATTACHMENTS Browse files in your Mac project from your iPhone. Read source files, attach photos, PDFs, screenshots, and other context directly into threads. PLANNING BOARD Keep per-thread task lists that persist on your Mac. Push tasks into the composer as prompt seeds and keep follow-up work organized. CUSTOM QUICK ACTIONS Build custom action buttons per project: restart a server, open a service, run a smoke test, prepare a TestFlight workflow, or launch a repeated project command. CONNECT FROM ANYWHERE Pair via QR code over local Wi-Fi. Use Tailscale for optional remote access outside local Wi-Fi. Supports multiple Macs so you can switch between machines without reconfiguring every project. VOICE DICTATION Dictate prompts with voice commands built in: send, stop, and clear. Useful for reviewing code and steering agents while away from the keyboard. PRIVACY BY DESIGN DexRelay does not proxy your source code or coding-agent conversations through DexRelay servers. The Mac runtime runs on your Mac. Optional feedback and diagnostics can be sent from Settings when you choose to report an issue. Terms of Use: https://dexrelay.app/terms Privacy Policy: https://dexrelay.app/privacy

About

JS Shell

Features
Read full description

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 โ€” from WebRTC to Geolocation โ€” 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.

Screenshots

DexRelay4 screens
JS Shell3 screens

Verdict

The call

The clearest difference is in-app purchases: JS Shell at none against DexRelay's 3. On price, ads, device support and iOS requirement 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. DexRelay sells 3 in-app purchases, starting at $5.99 per month. JS Shell asks for nothing beyond the download.

Scorecard1 real difference ยท 5 level
DexRelay versus JS Shell: the parameters behind the verdict, then further details
ParameterDexRelayJS Shell
PriceFreeFree
Update frequencyEvery 10 daysโ€”
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.2 โ€” better17.0
Further details โ€” not scored
Size93 MB6 MB
Age rating17+17+
Developercocotofy llcJowb Inc.

In-app purchases

3 purchases

DexRelay

Subscriptions2
  • DexRelay Pro Monthly14 Days trial$5.991 Month
  • DexRelay Pro Yearly14 Days trial$49.991 Year
One-time1
  • DexRelay Pro Lifetime$99.99
None

JS Shell

No in-app purchases

Questions

Is DexRelay free?
DexRelay is free to download, with in-app purchases available.
Is JS Shell free?
JS Shell is free to download, with no in-app purchases.
Do DexRelay or JS Shell have ads?
Neither DexRelay nor JS Shell shows ads.

Other comparisons