End-to-End Encrypted

Your terminal,
anywhere.

One command to install. One QR scan to pair.
A full terminal session on your iPhone — encrypted so not even the relay can read your data.

Download See how it works
user@mac — zsh — 80×24
~ % claude
 /▔▔▔▔▔▔▔▔/
 /▔▔▔▔▔▔▔▔▔▔/
 █  ▀▀  ▀▀  █
 █          █
 ▀▀▀▀▀▀▀▀▀▀▀▀
Claude Code v2.1
Opus 4.6 · Pro
────────────────
❯ Fix auth bug
✓ Patched auth.ts
✓ Tests passing
❯ _
How It Works

Three steps. Zero config.

No port forwarding. No VPN. No firewall rules. Just install, scan, and connect.

1

Install the server

One command on your Mac, Linux, or WSL machine. Auto-detects platform and installs everything.

curl -fsSL termcast.dev/install.sh | bash
2

Scan the QR code

Run termcast start. A QR code appears. Scan it with the Termcast iOS app.

3

You're connected

Full terminal on your iPhone. E2E encrypted. Auto-reconnects. Remembers your pairing.

📱 iPhone
🔒
E2E encrypted
☁️ Encrypted Relay
🔒
E2E encrypted
💻 Your Computer
Features

Built for real work.

Not a toy. A professional terminal client with the features developers actually need.

🔐

End-to-End Encryption

X25519 key exchange with ChaCha20-Poly1305. The relay sees only opaque blobs — never your terminal data.

🪟

First-Class tmux

Swipe between tmux windows. Dedicated shortcut bar for splits, new windows, and detach. Auto-resume sessions.

⌨️

Real Keyboard

Esc, Ctrl, Tab, arrow keys — all from a dedicated toolbar. Ctrl+C, Ctrl+Z, and tmux prefix shortcuts on tap.

🔄

Auto-Reconnect

Switch apps, lock your phone, walk to another room. Termcast reconnects automatically when you come back.

🔍

Pinch to Zoom

Read logs comfortably on any screen size. Pinch to zoom in and out of your terminal content smoothly.

🎨

Customizable

Choose your font, size, cursor style. Per-connection settings so each server feels right.

Security

Zero-knowledge relay.

Your terminal data is encrypted before it leaves your device. The relay routes messages but can never decrypt them. Not even we can see what you type.

🔑
X25519 Key Exchange
Ephemeral keypairs for perfect forward secrecy
🛡️
ChaCha20-Poly1305
Authenticated encryption for every message
📱
Apple CryptoKit
Hardware-backed crypto on iOS, Keychain storage
☁️
Edge Relay
Globally distributed relay, low latency worldwide
Download

Get started in under a minute.

Install the server on your computer, download the app on your iPhone.

iPhone App

Download Termcast from the App Store. Scan a QR code to pair with your computer.

Download on the App Store 🍎

Desktop Server

Install the server on macOS, Linux, or WSL. One command, no sudo required.

curl -fsSL https://ttyd-relay.xing-mathcoder.workers.dev/install.sh | bash
macOS arm64 macOS x64 Linux x64 Linux arm64 WSL

macOS Desktop App

A menu-bar app that wraps the server with a system tray, QR display, and start-on-login.

Headless / SSH

Works on servers with no display. QR prints as ASCII art and a local web UI shows it at localhost:8080.

termcast start --web-port 9090 --shell /bin/zsh
Verified

Every release is independently scanned.

6 automated security checks run on every build before distribution.
All results are public and verifiable.

All checks passing
🔍
Trivy
Passed
by Aqua Security
Scans all dependencies against the National Vulnerability Database for known CVEs. Detects leaked secrets, API keys, or credentials embedded in the binary.
🛡️
Grype
Passed
by Anchore
A second, independent vulnerability scanner cross-referencing Anchore's own database. Two scanners ensure no known vulnerability slips through. Fails the build on critical findings.
🌐
OSV-Scanner
Passed
by Google
Queries Google's Open Source Vulnerabilities database, aggregating advisories from GitHub, npm, PyPI, and 15+ ecosystems. Catches issues other scanners may miss.
🦠
ClamAV
Passed
by Cisco
Industry-standard open-source antivirus. Scans the binary for malware, trojans, viruses, and malicious signatures using continuously updated virus definitions.
🍎
Apple Notarized
Passed
by Apple
Signed with a Developer ID certificate and notarized by Apple. Apple has independently verified the binary is free of malicious content. macOS Gatekeeper allows it without warnings.
🔐
SHA-256 Checksum
Passed
Integrity Verification
Generates cryptographic checksums for every release. Verify your download matches exactly what was built — ensuring nothing was tampered with in transit.
View full scan results on GitHub →
Pricing

Simple pricing. No surprises.

The app is free for direct connections. Upgrade for encrypted relay access — start with 7 days free.

Free
$0
Free forever
  • Direct server connections
  • Full terminal with tmux support
  • Custom fonts & cursor styles
  • Keychain credential storage
  • QR relay (Pro only)
  • E2E encrypted relay
Pro
$0.99/mo
or $6.99/year — Save 42%
7 days free, cancel anytime
  • Everything in Free
  • QR code relay scanning
  • E2E encrypted relay connections
  • Connect from any network
  • No port forwarding needed
  • Support indie development
Go Mobile
Your Entire Workspace, Now in Your Pocket

Ever wish you could fix a website bug or start a new project while waiting for coffee? Now you can. Stop hauling your laptop everywhere and start coding on the go.

🌐

Ultimate Freedom

Access your computer and files from your phone or tablet. It's like having your office desk in your jeans pocket.

🤖

AI Help Anywhere

Get instant coding help from Claude and Gemini whenever inspiration strikes. It's like having a genius partner with you 24/7.

🛡

Total Peace of Mind

Your servers are always within reach. If something goes wrong, you can fix it in seconds, from anywhere in the world.

✍

Code Your Way

Whether you're "vibe coding" a new idea or running serious commands, do it all with a few taps.

You don't need to be glued to a desk to be productive. Take your terminal to go and turn every "waiting" moment into a "doing" moment.