The example I saw of "mobile support" was connecting via a mobile terminal emulator. I don't see how that is any different than using tmux with the same mobile terminal emulator.
Herdr supports mobile-friendly layouts seamlessly, just like responsive web pages. On a narrow terminal, the sidebar is automatically hidden, and the tab bar is replaced with a status line (current workspace name, current tab name, and agent statuses). Everything else is tucked into the hamburger menu.
