Features
One app. Every Apple platform. No feature gates on core terminal functionality.
Connection + Transport
SSH with modern defaults
Ed25519, ECDSA P-256/384/521, RSA. Agent forwarding, jump hosts, ControlMaster multiplexing.
Mosh for roaming
Re-implemented SSP protocol in Swift. UDP transport, sub-ms echo, survives network changes without dropping.
Secure Enclave keys
Hardware-backed ECDSA P-256 keys generated on device. Biometric-gated. Never exportable. Device-bound by silicon.
YubiKey + FIDO2
USB-C, NFC, PIV smart cards. ed25519-sk and ecdsa-sk keys for OpenSSH 8+.
Cloud integrations
Tailscale SSH, AWS SSM Session Manager, Cloudflare Access, Kubernetes exec, Docker exec. One app for everything.
Proxy support
HTTP, HTTPS, SOCKS5 per host. System proxy. PAC files. SSH ProxyJump multi-hop.
Renderer
Metal from day one
SDF glyph atlas for monospace text. Bitmap atlas pages for emoji and CJK wide glyphs. Per-cell instanced-quad shader.
120 fps on ProMotion
CADisplayLink on iOS, CVDisplayLink on macOS. Targets the display's preferred refresh rate.
Sub-millisecond input latency
Measured, benchmarked, CI-enforced. Keystroke to pixel in under 1 ms on ProMotion hardware.
Full Unicode
True color, bold, italic, undercurl, strikethrough, dimmed. OSC 8 hyperlinks. Inline images (iTerm2, Kitty, Sixel).
On-Device AI
Apple Foundation Models
Run the on-device 3B model. Explain commands, summarize output, review before send. Free. Private. Offline.
Silent degradation
No Apple Intelligence hardware? AI features hide. BYO-key path surfaces in Settings. No error, no nag.
BYO Claude + OpenAI
Bring your own Anthropic Claude or OpenAI-compatible API key. Prompt caching enabled for Claude.
Privacy invariant
No terminal content reaches an AI provider without a discrete user gesture. Enforced by code, verified by tests.
Files
SFTP browser
List, preview, Quick Look. Drag-drop between local and remote. Transfer queue with pause and resume.
FileProvider extension
Mount remote directories in Finder and Files.app. On macOS, iPadOS, and iOS. Edit-with flow round-trips changes.
SCP fallback
Servers without SFTP subsystem still work. Automatic detection and fallback.
Security
App lock
Face ID, Touch ID, Optic ID. PIN fallback. Auto-lock timer. Per-host biometric requirement.
Destructive command detection
Pattern detector flags rm -rf, dd, mkfs, DROP TABLE. Confirm-to-send. AI review. Ninja-mode bypass for experts.
Password masking
Passwords redacted from session recordings and screenshots at write-time. Terminal contents never logged anywhere.
Known-hosts TOFU
First-connect trust with diff alert UI on fingerprint change. Synced across devices via iCloud.
Pair Mode + Teams
Share your terminal
Generate a 6-character code. Colleagues open the link and watch live in their browser. Read-only. 5 viewer cap.
Team tier
Shared hosts, snippets, themes via CloudKit shared zones. Role-based access: Owner, Admin, Member.
Audit log
Append-only. Tracks sessions, file transfers, snippet execution, tunnel operations, admin changes. 30/90/365-day retention.
Volume licensing
5 to 100 seats. Apple Business Manager supported. 20% discount above 10 seats.
UI + Platform
Tabs, splits, workspaces
Pinnable tabs. Chrome-style tab groups. Horizontal, vertical, and grid splits. Saved multi-pane layouts.
Command palette
Cmd+K on Mac and iPad. Pinch-and-hold on Vision Pro. Fuzzy-searches hosts, commands, snippets, settings.
Quake-style hotkey
Cmd+` summons a drop-down terminal on Mac. Global hotkey, always ready.
visionOS Cockpit Mode
Optional immersive space. Surround yourself with terminal windows in spatial computing.
Widgets + Live Activities
Home screen, Lock Screen, Control Center. Dynamic Island shows active transfers and long-running commands.
Siri + Shortcuts
'Is prod healthy?' — Siri invokes the Companion agent, opens SSH, runs system.snapshot, speaks the answer.