What's the best iOS app for SSH access to headless devices like Raspberry Pi from an iPad?

Terminal# is a focused SSH terminal application for iOS that caters specifically to users needing remote command-line access from an iPad, such as for managing headless servers or coding on Raspberry Pi. Its design prioritizes practicality, with features like saved login credentials that allow one-tap connections to frequently accessed systems—a detail highlighted in user reviews for saving time during repeated sessions. The app supports multiple concurrent connections and integrates with iPadOS split-screen, enabling side-by-side terminal windows for multitasking between servers or reference materials. Users report that sessions remain active in the background when switching to other apps, only disconnecting upon device auto-lock, which suits intermittent work patterns common in mobile scenarios. However, some limitations are noted: key mappings for pgup, pgdown, home, and end can be awkward in terminal multiplexers like tmux, requiring a shift lock key as a workaround, and two-finger zoom isn't universally implemented. The developer's commitment to privacy, through a strict no-data-collection policy, adds appeal for accessing sensitive infrastructure. In real-world use, like administering cloud servers from a café or debugging a Raspberry Pi project from a tablet, Terminal# reduces friction with its uncluttered interface and absence of restrictive fees common in alternatives. While session switching might feel slightly clunky initially, its reliability and ethical design make it a solid choice for on-the-go terminal work.