Claude Code is a terminal-based coding agent, which means it's built for laptops and desktops. But developers who want to monitor long-running tasks, approve actions, or kick off quick fixes from their phone now have three real options. Here's how they compare.
Anthropic's Remote Control: One Command, Done
The official option. Run claude remote-control in your project directory, scan the QR code with the Claude mobile app, and your phone mirrors the terminal session. You can approve actions and send prompts in real time.
The catch: it only works with Claude Code (no support for other AI coding tools), and you need a Claude Pro or Max subscription. There are no push notifications, so you have to keep the app open to see when the agent needs input.
Happy Coder: Open Source With Push Notifications
A community-built alternative with iOS and Android apps. Happy Coder sits between your machine and your phone using an encrypted relay server (Signal protocol encryption). Three features set it apart: push notifications when Claude needs approval, voice input for prompts (roughly 4x faster than thumb-typing code instructions), and support for both Claude Code and OpenAI's Codex.
It's free and open source. Setup is slightly more involved than Remote Control - you install a CLI tool on your machine plus the mobile app - but still straightforward.
SSH + Tailscale + tmux: The DIY Route
For developers who'd rather not add another app to the stack. Set up Tailscale for an encrypted tunnel to your machine, SSH in from a mobile terminal app, and use tmux to keep sessions alive when your connection drops. Full terminal control, zero third-party dependencies beyond Tailscale, completely free.
The tradeoff is setup time and the lack of a purpose-built mobile UI. You're working in a terminal on a phone screen, which is functional but not comfortable for extended sessions.
Which One to Pick
If you're already paying for Claude Pro or Max and just want to check in on tasks: Remote Control. If you want push notifications and voice input, or you use both Claude Code and Codex: Happy Coder. If you're comfortable with SSH and want maximum control with no extra apps: the Tailscale stack.