Terminal app for iPhone Duo, folded or open.
ShellDrop is a free, native SSH terminal built for running AI coding agents like Claude Code and Codex in Tmux. Version 5.2.2 adds full iPhone Duo support on Apple's foldable, on the big inner display and on the folded outer screen.
ShellDrop 5.2.2 went to App Review on 28 October 2026.
The open Duo, edge to edge.
Unfold the Duo and ShellDrop runs edge to edge on the big inner display. The terminal picks a larger font from the window width, and Tmux resizes once per fold or unfold.
Edge to edge
The app fills the inner display when the Duo is open.
Font from window width
The terminal picks a larger font size based on how wide the window is.
One Tmux resize per fold
Fold or unfold the Duo and Tmux resizes once, in one step.
Home, Launchpad and Settings keep a readable column on the wide inner display.
Folded, centred and clear.
On the folded outer screen everything stays centred and clear of the status bar column on the Duo's right edge.
Folded, the Duo works for a quick check on an agent: read the latest output, then answer with a short instruction or a Voice Drop.
The Duo terminal built for AI agents.
ShellDrop is built for running AI coding agents over SSH. Run Claude Code or Codex in a Tmux session on a headless Mac or VPS, then open the session on the Duo to read what it did and send the next instruction.
Scroll Tmux history with one finger, paste screenshots into the session, speak into the prompt with Voice Drop, and keep sessions alive in the background while you use other apps.
Each agent gets its own Tmux session on the server. On the open Duo the wider inner display shows more of each line, and horizontal swipes move between sessions. Tab names can sync from Tmux, so each tab is labelled after the agent it is attached to, and the Droplet Visualizer shows every live session at once.
Set it up in three steps.
The agents run on a computer that stays on, and the Duo connects to them over SSH. The Mac mini agent OS write-up covers the server setup in full.
A headless Mac or VPS
Run Claude Code or Codex on a Mac mini or a VPS, inside a Tmux session that keeps going when nobody is watching.
SSH in from the Duo
Save the connection in ShellDrop with a password or a key generated in the Secure Enclave, and it opens with one tap from Home.
Attach to Tmux
Attach to the session and the agent's output is on screen, folded or open. Fold or unfold and Tmux resizes once.
Free, with no account.
Every feature ships in the free app, with no subscription and no account. SSH keys can be generated in the Secure Enclave, where the private key never leaves the chip.
For a side-by-side with another iOS SSH client, here is how ShellDrop compares with Termius.
Terminal for iPhone Duo, answered.
Tap to expand. See the full FAQ for everything else.
Is there a terminal app for iPhone Duo?
Yes. ShellDrop is a native SSH terminal with full iPhone Duo support from version 5.2.2, folded and open. It is free, with no account, and built for running AI coding agents like Claude Code and Codex in Tmux.
Does ShellDrop use the whole inner display on the open Duo?
Yes. On the open Duo the app runs edge to edge on the inner display, and the terminal picks a larger font from the window width. Home, Launchpad and Settings keep a readable column on the wide screen.
What happens to Tmux when I fold or unfold the Duo?
Tmux resizes once per fold or unfold, in one step. The terminal picks its font from the new window width, and the session on the server keeps running through the change.
Does ShellDrop work on the folded outer screen?
Yes. On the folded outer screen everything stays centred and clear of the status bar column on the right edge. The terminal and Home both work folded, so a session can be checked on the foldable without opening it.
Can I run Claude Code on iPhone Duo?
Yes. Run Claude Code or Codex in a Tmux session on a headless Mac or VPS, then SSH in from the Duo to read the output and send the next instruction. Open the Duo for a wider Tmux pane on the inner display. Claude Code on iPhone covers the setup.
Is ShellDrop free on iPhone Duo?
Yes. ShellDrop is free, with no subscription and no account. Every feature ships with the app, iPhone Duo support included, and SSH keys can be generated in the Secure Enclave.
The terminal app for iPhone Duo.
Free, with no subscription and no account. Every feature ships with the app.
Download on the App Store