The Best Apps to Control Coding Agents from Mobile (2026)
Grass, Happy Coder, Claude Code Remote Control, Cursor Mobile, and AgentsRoom Mobile all let you control coding agents from your phone. Here's which one fits your setup.
Five real options exist today for controlling AI coding agents from your phone: Grass, Happy Coder, Claude Code Remote Control, Cursor Mobile, and AgentsRoom Mobile. None of them is the right answer for everyone — they differ on agent compatibility, pricing, network model, and what "control" actually means. Here's an honest breakdown of each.
TL;DR
- Grass — native iOS (Android PWA), local connection, no relay, supports Claude Code + OpenCode, free
- Happy Coder — open-source, encrypted relay, cross-platform web/iOS/Android, supports Claude Code + Codex
- Claude Code Remote Control — Anthropic's native feature, requires Max plan ($100/month), zero extra tooling
- Cursor Mobile — PWA for Cursor's cloud-hosted agent, requires Cursor Pro ($20/month), not for Claude Code
- AgentsRoom Mobile — companion to AgentsRoom desktop (Mac only), requires AgentsRoom to be running
Grass — local-first, direct connection
Grass is a native iOS app with an Android PWA. It connects directly to a Claude Code or OpenCode session running on your machine or a remote server — no relay server in the path. The mobile coding agent access model is straightforward: install the CLI, run grass start, scan a QR code.
What you get: Live agent output streaming via SSE, native permission modals for each approval gate, file browser, diff viewer (git diff HEAD), and prompt input. The global permission manager queues gates from all connected servers — if you're running multiple agents, all their approval requests surface in sequence.
Network model: Local WiFi by default. For remote access: grass start --network tailscale (private, requires Tailscale on both machines) or grass start --network remote-ip (public IP, use with care).
Agent support: Claude Code and OpenCode. Claude Code sessions resume via claude --continue; OpenCode connects to a process on port 4096.
Pricing: Free for local use. Remote Daytona workspace usage includes free credits.
Best for: Claude Code and OpenCode users who want a local-first, real-time control layer with no cloud dependency and no ongoing subscription.
Limitations: Requires Tailscale or a network-reachable IP for remote access. No Windows native app (Android PWA covers it).
Happy Coder — open-source with encrypted relay
Happy Coder is an open-source mobile and web client for Claude Code and Codex. Sessions are routed through an encrypted relay server using TweetNaCl encryption (zero-knowledge — the relay sees ciphertext, not session content). Available on iOS, Android, and the web.
What you get: Live session output, prompt input, and session management across devices. The relay model means you don't need Tailscale or a public IP — the relay handles the connection.
Network model: Encrypted relay server. No direct local connection required. Works from any network without additional setup.
Agent support: Claude Code and Codex (OpenAI). Open-source at github.com/HappyCoderIO/happy-coder — auditable encryption implementation.
Pricing: Free, with an optional voice subscription.
Best for: Developers who want an open-source, auditable relay with E2E encryption; Codex users; those who don't want to set up Tailscale.
Limitations: Relies on a relay server — introduces latency and a dependency on the relay's uptime. Native approval gate modals are less developed than Grass.
Claude Code Remote Control — Anthropic's native option
Anthropic built remote control directly into Claude Code for Max plan subscribers. Access a running Claude Code session from claude.ai/code or the Claude mobile app. No third-party tooling required.
What you get: Session access via Claude's own interface — the same experience as the web UI, but connecting to a local Claude Code process. Execution stays on your machine.
Network model: Routes through Anthropic's infrastructure. Your local Claude Code instance connects to Anthropic's servers; you access it from the Claude mobile app or claude.ai/code from anywhere.
Agent support: Claude Code only.
Pricing: Requires Claude Max plan at $100/month.
Best for: Developers already on Max plan who want zero additional tooling. If you're paying $100/month for Max, this is the no-overhead option.
Limitations: $100/month is a real barrier if you're not already on Max. Claude Code only — no OpenCode or other agents.
Cursor Mobile — for Cursor's cloud agent
Cursor Mobile is a PWA (not a native app) for dispatching and monitoring Cursor's Background Agent feature. Agents run in Cursor's cloud infrastructure, not on your machine.
What you get: Task dispatch, progress monitoring, and light session interaction for agents running in Cursor's cloud. PR creation and team collaboration features.
Network model: Cursor's cloud. The agent never runs on your machine.
Agent support: Cursor's own agent only. Does not work with Claude Code or OpenCode.
Pricing: Cursor Pro at $20/month plus usage-based pricing for Background Agent compute.
Best for: Cursor users who want fire-and-forget task dispatch with team collaboration features. Not applicable if your workflow is Claude Code or OpenCode.
Limitations: Not a native app — PWA only. Cloud-hosted means you can't run it on your own infrastructure. No support for Claude Code, OpenCode, or local execution.
AgentsRoom Mobile — companion to AgentsRoom desktop
AgentsRoom is a desktop AI coding agent environment for Mac that runs Claude Code and its own agents locally. The mobile app is a companion to that desktop environment — it connects to agents running inside AgentsRoom and lets you monitor output and send prompts from your phone.
What you get: Mobile visibility into agents running inside the AgentsRoom desktop app — output monitoring, prompt input, and light session control.
Network model: Connects to the AgentsRoom desktop app running on your Mac. Not standalone — AgentsRoom must be running.
Agent support: Claude Code and AgentsRoom's own agents (Mac only).
Pricing: Tied to AgentsRoom's pricing model.
Best for: Developers already committed to AgentsRoom as their desktop agent environment. If you're already running AgentsRoom on a Mac, this is the natural mobile companion.
Limitations: Mac-only desktop dependency. Not standalone — requires AgentsRoom to be running. If you're not already an AgentsRoom user, there's no reason to adopt this over the other options.
How to choose
| Grass | Happy Coder | Claude Code Remote Control | Cursor Mobile | AgentsRoom Mobile | |
|---|---|---|---|---|---|
| Claude Code | ✓ | ✓ | ✓ | ✗ | ✓ |
| OpenCode | ✓ | ✗ | ✗ | ✗ | ✗ |
| Codex | ✗ | ✓ | ✗ | ✗ | ✗ |
| Native iOS app | ✓ | ✓ | ✓ (Claude app) | ✗ | ✓ |
| Local connection | ✓ | ✗ (relay) | ✗ (Anthropic servers) | ✗ (cloud) | ✓ |
| Free tier | ✓ | ✓ | ✗ ($100/mo) | ✗ ($20/mo) | depends |
| Mac-only | ✗ | ✗ | ✗ | ✗ | ✓ |
| No extra setup for remote | ✗ (Tailscale) | ✓ | ✓ | ✓ | ✓ |
Choose Grass if: You're running Claude Code or OpenCode, you want a direct local connection with no cloud dependency, and you're comfortable with a one-time Tailscale setup for remote access.
Choose Happy Coder if: You want open-source and auditable encryption, you're running Codex, or you want cross-platform access without Tailscale setup.
Choose Claude Code Remote Control if: You're already on Max plan and want zero additional tooling.
Choose Cursor Mobile if: You're all-in on Cursor's agent and want cloud execution with team collaboration.
Choose AgentsRoom Mobile if: You're already using AgentsRoom on a Mac and want the integrated companion experience.
Frequently asked questions
What is the best mobile app for Claude Code?
It depends on your setup. Grass is the best option for Claude Code and OpenCode users who want a local-first, real-time connection with approval gate modals. Claude Code Remote Control is the best option if you're already on Max plan. Happy Coder is the best option if you want an open-source relay with no Tailscale setup.
Can I control Claude Code from my iPhone?
Yes. Grass has a native iOS app. Happy Coder has iOS support. Claude Code Remote Control works through the Claude iOS app (Max plan required). All three let you send prompts, monitor output, and interact with running Claude Code sessions from an iPhone.
What is the difference between Grass and Happy Coder?
Grass connects directly to Claude Code — no relay server, no intermediary. Happy Coder routes the connection through an encrypted relay. Grass requires Tailscale or a network-reachable IP for remote access outside the local network; Happy Coder's relay handles this without additional setup. Grass supports OpenCode; Happy Coder supports Codex. Both are free.
Does Claude Code have an official mobile app?
Not as a standalone app. Anthropic's Claude mobile app can access Claude Code sessions if you're on the Max plan ($100/month) via the Claude Code Remote Control feature. For developers not on Max, third-party apps like Grass and Happy Coder fill this gap.
Do I need a subscription to control coding agents from my phone?
Not with Grass or Happy Coder — both are free. Claude Code Remote Control requires Max plan at $100/month. Cursor Mobile requires Cursor Pro at $20/month. You only need a subscription if you're using Anthropic's or Cursor's native solutions.
What is Cursor Mobile and does it work with Claude Code?
Cursor Mobile is a PWA for monitoring Cursor's cloud-hosted Background Agent. It does not work with Claude Code — it only controls Cursor's own agent running in Cursor's cloud infrastructure.
What is AgentsRoom Mobile?
AgentsRoom Mobile is the companion app for AgentsRoom, a Mac-only desktop AI coding agent environment. It lets you monitor and interact with agents running inside the AgentsRoom desktop app from your phone. It's not standalone — AgentsRoom must be running on your Mac.