ShellCast vs Cyphir

ShellCast lets you control any terminal or long-running CLI process from your devices. Guide your AI agents remotely and get nudged when they need your attention. No complex setup; just pair once and stay connected from anywhere—batteries included.

Cyphir turns your iPhone into a control surface for AI coding agents running on your Mac or PC. Start sessions, send instructions, monitor activity, and stay close to your AI-assisted development work even when you are away from your desk. CONTROL YOUR AI WORKFLOW Cyphir lets you connect your phone to supported coding-agent sessions on your computer through the Cyphir bridge. From your iPhone, you can send commands, follow session activity, and keep visibility into what is happening on your machine. BUILT FOR AI CODING AGENTS Cyphir is designed for developers, builders, and power users who run tools like Claude Code, Codex, and other local AI-assisted coding workflows. Your computer runs the agent. Your phone becomes the command and review layer. REMOTE SESSION VISIBILITY Follow active sessions from your phone, review recent activity, and keep track of agent work while you move between your desk, laptop, and mobile device. PAIR YOUR COMPUTER SECURELY Install the Cyphir bridge on your Mac or PC, pair it with your iPhone, and connect through Cyphir’s relay infrastructure. Pairing is tied to your account and device flow so you can manage access from the app. APPROVAL-FOCUSED CONTROL Cyphir is built around visibility and control. Supported approval and review flows help you understand what your agent is doing and reduce the chance of unattended work moving forward without your awareness. PRIVACY-CONSCIOUS BY DESIGN Cyphir is designed to avoid unnecessary exposure of sensitive workflow data. Authentication, pairing, local device storage, session cleanup, and relay behavior are built with security and privacy in mind. HOW IT WORKS 1. Install the Cyphir bridge on the computer where your AI coding agent runs. 2. Pair your iPhone using the Cyphir app. 3. Start or monitor supported sessions from your phone. 4. Review activity and stay in control while your agent works. WHAT YOU CAN DO • Connect your iPhone to supported AI coding workflows on your computer • Start and monitor coding-agent sessions • Send natural-language instructions • Review supported session activity from your phone • Use account-based pairing and bridge connection flows • Manage your mobile session state securely • Keep your AI coding workflow close, even when you step away from your desk WHO CYPHIR IS FOR Cyphir is for developers, founders, technical operators, and AI power users who want mobile visibility and control over their AI coding workflows. REQUIREMENTS Cyphir requires the Cyphir bridge to be installed on the Mac or PC you want to connect. Supported AI coding tools must be installed and configured separately on that computer. A Cyphir subscription may be required after the free trial.