Build from anywhere.

Build from anywhere.

Cosyra is a mobile cloud agent platform for iPhone and Android with Claude Code, Codex CLI, OpenCode, and Gemini CLIpre-installed. Start a task at your desk. Approve it from the train.

Download on App Store Get it on Google Play

Scan to install on your phone iPhone or Android

★ 4.7 on App Store ·1 hour free, no card ·cancel anytime

when is this for you ↓

1. 03:47 pager goes off

You're on-call. No laptop in reach.

Forty minutes of commute. Use them.

You didn't want to bring a laptop today.

\~/project · claude

$ claude

╭───────────────────────────────────╮

│ Claude Code · \~/project · main │

╰───────────────────────────────────╯

\> refactor the auth middleware to refresh tokens

I'll extract the validation, add auto-refresh, and

update the error handling. Editing 2 files…

src/middleware/auth.ts

\- import { verify } from 'jsonwebtoken'

\+ import { verify, decode } from 'jsonwebtoken'

\+ import { refreshToken } from '../lib/auth'

✓ 12 tests passed · pushed to origin/main

$

2-min tutorial · install to first diff

Watch the whole loop: install, boot the container, paste a key, ship a change, on a phone.

1. 01

Install the app.

Get a fresh Ubuntu container.

Pick your agent.

Code from anywhere.

Close the app. Pick up where you left off.

Anthropic Claude Code Long-context refactors, when 50+ files are in motion. Setup guide → OpenAI Codex CLI Tight loops, unfamiliar APIs, one-shot fixes, explore-by-prompt. Setup guide → Google Gemini CLI Long-context work on a paid AI Studio/Vertex key (Gemini's free personal tier ended 2026-06-18). Setup guide → Open source OpenCode Provider-agnostic, swap Anthropic, OpenAI, Google without rewriting config. Setup guide →

It's a real machine, not a sandbox or a chat wrapper.

• Ubuntu 24.04
• 30 GB persistent
• Node · Python · Git
• tmux · vim
• Session hibernation
• install any package

isolation

Your code stays in your box.

Every account gets its own cloud container. Your repos and files live inside your environment, never pooled, never shared across users.

your key, your bill

Bring your own API key.

Use your own Anthropic, OpenAI, or Google account. Your usage, your billing. Cosyra never sits between you and your provider.

encryption

Keys encrypted on-device.

API keys are stored with platform-native encryption on your phone and sent over TLS straight to your container. They don't live on our servers.

no lock-in

Start free, leave clean.

One hour of compute free, no credit card. Subscribe through the App Store or Google Play and cancel anytime. Nothing auto-charges behind your back.

Want the architecture? See exactly how isolation, key handling, and egress work on the security page.

| Feature comparison: Cosyra, Claude Code Remote Control, CloudCLI, Replit mobile, Termux, and SSH-to-VPS for running AI coding agents on a phone. | Feature | Cosyra | Replit mobile | Claude Remote Control | CloudCLI | Termux | SSH to VPS | | ------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------- | -------------------------- | ---------------------- | ----------------------------- | ---------------------- | ------------------------ | ---------- | | Works on iPhone | native app | native app | via Claude app | | | client only | | | Works on Android | native app | native app | via Claude app | | | client only | | | Keeps moving when your laptop sleeps | | | | | Android | Only if server is on | | | Multiple AI agents | Claude, Codex, OpenCode, Gemini | Replit Agent + AI tools | Claude Code only | Claude, Codex, Gemini, Cursor | Install your own | Install your own | | | Full Ubuntu Linux | 24.04 | Replit workspace | Uses your laptop env | | Partial (ARM userland) | If your server is Ubuntu | | | Server to manage | None | None | Laptop acts as server | None | None | you run it | | | Persistent storage | 30 GB | Project storage | Your laptop drive | Varies | Phone storage | Your server | | | Session hibernation | Pro | Workspace lifecycle varies | Tied to laptop session | Varies | | tmux manually | | | Price | $29.99/mo | Credit-based plans | Free with Claude | Varies | Free | $5–20/mo VPS | |

Cosyra that's us

Works on iPhone native app

Works on Android native app

Keeps moving when your laptop sleeps

Multiple AI agents Claude, Codex, OpenCode, Gemini

Full Ubuntu Linux 24.04

Server to manage None

Persistent storage 30 GB

Session hibernation Pro

Price $29.99/mo

Replit mobile

Works on iPhone native app

Works on Android native app

Keeps moving when your laptop sleeps

Multiple AI agents Replit Agent + AI tools

Full Ubuntu Linux Replit workspace

Server to manage None

Persistent storage Project storage

Session hibernation Workspace lifecycle varies

Price Credit-based plans

Claude Remote Control

Works on iPhone via Claude app

Works on Android via Claude app

Keeps moving when your laptop sleeps

Multiple AI agents Claude Code only

Full Ubuntu Linux Uses your laptop env

Server to manage Laptop acts as server

Persistent storage Your laptop drive

Session hibernation Tied to laptop session

Price Free with Claude

CloudCLI

Works on iPhone

Works on Android

Keeps moving when your laptop sleeps

Multiple AI agents Claude, Codex, Gemini, Cursor

Full Ubuntu Linux

Server to manage None

Persistent storage Varies

Session hibernation Varies

Price Varies

Termux

Works on iPhone

Works on Android

Keeps moving when your laptop sleeps Android

Multiple AI agents Install your own

Full Ubuntu Linux Partial (ARM userland)

Server to manage None

Persistent storage Phone storage

Session hibernation

Price Free

SSH to VPS

Works on iPhone client only

Works on Android client only

Keeps moving when your laptop sleeps Only if server is on

Multiple AI agents Install your own

Full Ubuntu Linux If your server is Ubuntu

Server to manage you run it

Persistent storage Your server

Session hibernation tmux manually

Price $5–20/mo VPS

Convinced? It's a one-tap install.

Download on App Store Get it on Google Play

Scan to install on your phone iPhone or Android

1 hour free · no credit card · cancel anytime

deep dives

vs Replit mobile → vs Claude Remote Control → vs CloudCLI → vs Termux → vs Blink Shell → vs Codespaces on mobile → vs iSH → TUI apps on phone →

Reviewed April 2026. Competitor offerings vary; see individual vendors for terms.

Replit Mobile Alternative: Cosyra Terminal AI Coding Replit's mobile app builder vs Cosyra's terminal-first Ubuntu container for coding on the go. Read → TUI Apps on Phone: tmux, vim, htop, Claude Code Terminal user interface apps on iPhone and Android, and why AI coding CLIs need a real mobile terminal. Read → How to Run Claude Code on iPhone or Android Step-by-step setup for running Claude Code on iPhone or Android from a real Linux terminal. Read → How to Run Codex CLI on Your Phone Practical paths for using Codex CLI on phone from iPhone or Android, including the lowest-friction setup. Read → How to Run Gemini CLI on Your Phone Google's terminal agent on iPhone or Android. Its free personal tier ended 2026-06-18 (Antigravity CLI transition); run it with a paid AI Studio/Vertex key instead. Read → How to Run OpenCode on Your Phone Open-source terminal agent that lets you swap providers without rewriting your config, on a phone. Read → What Is a Mobile Coding Terminal? A concise guide to local terminals, SSH workflows, and cloud terminals on mobile. Read → Termux Alternative: Cosyra for Mobile Coding An honest comparison of cloud vs local mobile terminal workflows for AI coding agents. Read → Blink Shell Alternative: Cosyra for iPhone Terminals Cosyra and Blink Shell compared for iPhone terminal work, managed container vs SSH client, AI agents, pricing. Read → GitHub Codespaces Mobile Alternative: Cosyra Native Native iOS and Android app vs browser-only Codespaces, with AI agents pre-installed and a free trial. Read →

Can I run Claude Code on my iPhone? #

Yes. Cosyra gives you an isolated Ubuntu 24.04 container with Claude Code, Codex CLI, OpenCode, and Gemini CLI pre-installed. You access that Linux environment from a native iPhone app, so you can run Claude Code on iPhone without setting up your own VPS or SSH workflow. See our step-by-step Claude Code on phone guide for the full walkthrough.

Does my work stop when my laptop sleeps? #

No. Cosyra runs the agent in a cloud container, not on your phone or your laptop. Start a Claude Code task at your desk, close your laptop, get on the train, and the agent keeps going. Your phone is the surface where you approve permissions and review diffs; the work itself never stops because your hardware did. That is the difference between Cosyra and SSHing into a laptop, or using Anthropic's Claude Remote Control, where the laptop has to stay on.

Can I run Claude Code on Android? #

Yes. Cosyra ships a native Android app that connects to the same hosted Ubuntu environment. Claude Code, Codex CLI, OpenCode, and Gemini CLI are pre-installed, and other CLI tools may work if their Linux package and runtime requirements fit the container. The Claude Code on phone guide covers both iPhone and Android setup.

Can I run Codex CLI on my phone? #

Yes. Codex CLI comes pre-installed in the same cloud Ubuntu environment, so you can run Codex CLI on phone from either iPhone or Android without building your own mobile terminal stack first. Our Codex CLI on phone guide covers the setup and tradeoffs.

What is a mobile coding terminal? #

A mobile coding terminal is a phone app that gives you terminal access for real development work on mobile. In Cosyra's case, that means a cloud-hosted Linux container you open from iPhone or Android. Unlike Termux, which is a local Android terminal, a mobile cloud terminal gives you persistent storage and a standard Linux environment for common CLI workflows. We break down the category in what is a mobile coding terminal, and compare against GitHub Codespaces on mobile for teams already inside the GitHub workflow.

How is Cosyra different from Termux? #

Termux is a local Android terminal running an ARM userland on your phone. Claude Code and other Node.js-based agents can be installed on Termux via npm with workarounds, but Android 12+'s phantom process killer can terminate long sessions, and native installers built for x86\_64 Linux do not run. Cosyra runs a full x86\_64 Ubuntu container in the cloud, available on both iPhone and Android, with AI agents pre-installed and without the same local Android background-process limits. Read the full Cosyra vs Termux comparison.

How is Cosyra different from SSH'ing into my own server? #

Cosyra removes the server. There is no VPS to rent, no Linux distro to pick, no SSH keys to configure, no tmux session to keep alive, and no firewall to punch through. You install the app, sign in, and your container starts with Claude Code, Codex CLI, OpenCode, and Gemini CLI already installed. See Cosyra vs CloudCLI for a direct comparison of hosted mobile terminals.

Which AI CLI tools does Cosyra support? #

Claude Code, Codex CLI, OpenCode, and Gemini CLI come pre-installed. The container also includes Node.js, Python, Git, tmux, vim, and standard dev tools. You can install additional CLI tools yourself, but compatibility depends on each tool's Linux package, architecture, and runtime requirements. Our AI coding agents on mobile guide covers the pre-installed set in depth.

Do I need my own API keys? #

Yes. Cosyra follows a bring-your-own-key model so you use your own Anthropic, OpenAI, or Google provider accounts and keep direct control over usage and billing. Keys are stored on-device with platform-native encryption and transmitted over TLS to your container.

Can I use Cosyra for private or proprietary code? #

Yes. Each user gets their own isolated cloud container. Your code and files stay within your environment rather than being shared across users. AI interactions go directly from your container to the provider you choose using your own API key.

Do Cosyra sessions persist between app opens? #

Yes. Your files persist between sessions on 30 GB of storage attached to your container. Pro users get session hibernation: your container pauses after ten minutes of inactivity and resumes with your session state restored when you reopen the app, so in normal use you can pick up where you left off without re-cloning the repo.

How much does Cosyra cost? #

Every signup gets 1 hour of free compute, no credit card. When you want more, opt into the free trial (10 hours over 7 days, still no card). After that, Pro is $29.99/month or $300/year and includes 120 hours/month of compute, 30 GB of persistent storage, and session hibernation. Subscriptions are via in-app purchase on the App Store or Google Play and can be cancelled anytime.

Is Cosyra just Claude Code mobile? #

No. Claude Code is one of four AI coding agents Cosyra ships. Cosyra is a mobile coding terminal with a Linux environment for common CLI work such as Git, Node.js, Python, tmux, and the AI agents you install yourself. Some repos need heavier services or system dependencies, so verify project-specific requirements before relying on a phone-only setup. See who uses Cosyra: on-call engineers, commuters, and no-laptop developers.

How is Cosyra different from Claude Code Remote Control? #

Anthropic's Remote Control (shipped 2026-02-25) lets you control an active Claude Code session on your laptop from the Claude app on your phone. It is included with a paid Claude plan (Pro, Max, Team, or Enterprise), not free-tier and not usable with an API key, and works well when your laptop is on, awake, and you only use Claude Code. Cosyra runs Claude Code, Codex CLI, OpenCode, and Gemini CLI in a cloud Ubuntu container that stays up when your laptop is closed, off, or at home, and persists between devices. Read the full Cosyra vs Claude Remote Control comparison for the tradeoffs.

// the work travels with you now

Start coding from your phone.

One hour of compute, free, no credit card. Install it, paste a key, and the next time your laptop is in the other room, the work keeps moving.

Download on App Store Get it on Google Play

Scan to install on your phone iPhone or Android