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QuickTUI vs Termius
Termius is a popular general-purpose SSH client; QuickTUI is a purpose-built client for tmux plus coding agents. They overlap in that both put a terminal on your phone, but they are built for different jobs.
Termius is a polished, multi-platform way to SSH into many hosts, manage keys, and keep a tidy connection list. QuickTUI is narrower and deeper: it attaches to real tmux on your own server, runs Claude Code, Codex, or any CLI agent, and keeps that session alive across disconnects out of the box.
| Dimension | QuickTUI | Termius |
|---|---|---|
| Native tmux (windows, panes, scrollback) | Yes | — |
| Native iPhone & iPad app | Yes | Yes |
| Browser client | Yes | Varies |
| Self-hosted / direct connection | Yes | Your SSH hosts |
| Runs any CLI agent | Yes | Via SSH shell |
| Session keeper across disconnects | Yes | — |
| Pricing model | Free for one server; Pro one-time; optional Relay sub | Varies |
| Also available in China App Store | Yes | — |
General SSH vs tmux and agents
Termius is a general-purpose SSH client, not tmux-specific or agent-specific. You can of course run tmux and a coding agent inside a Termius SSH session, but you set that up and manage it yourself. QuickTUI builds tmux and agent supervision into the product, so windows, panes, scrollback, and reattachment are the default experience rather than something you assemble.
Session persistence
With a plain SSH client, a dropped connection can drop your session unless you have already wired up tmux or screen yourself. QuickTUI's session keeper is built in: switch networks, background the app, or lose signal, and you reattach exactly where you left off.
Which should you pick?
If you manage a fleet of servers and want a first-class, general-purpose SSH client with key management and a broad protocol feature set, Termius is a better fit; that is what it is designed for, and QuickTUI does not try to replace it. If your goal is specifically to run and supervise coding agents in real tmux from your phone, self-hosted and direct, with sessions that persist, QuickTUI is the more focused tool. Many people happily use both.
FAQ
Is QuickTUI an SSH client like Termius?
No. QuickTUI talks to its own lightweight server and drives real tmux, rather than being a general-purpose SSH client. You can still reach the machine over your LAN, a VPN, or a tunnel.
Can I keep using Termius alongside QuickTUI?
Yes. They serve different needs: Termius for broad SSH access, QuickTUI for tmux and coding agents, and there is no conflict in using both.