OT First Aid

OT First Aid helps technicians, maintenance teams, and automation engineers troubleshoot common faults in industrial systems. Structured immediate actions, checklists, possible causes, recommended tools, and escalation guidance make diagnostics faster and more consistent. The app includes practical guides for PLCs, HMIs, PROFINET, fieldbus systems, drives, sensors, safety circuits, cameras, servers, databases, remote access, and industrial networks. All built-in guidance works offline and is designed for use directly at the machine. Premium adds custom troubleshooting guides, plant profiles, contacts, maintenance notes, incident logs, photos, QR codes, PDF export, sharing, JSON backup and import, iCloud backup, and Face ID protection.