This guide shows how the ABA Matrix Mobile App makes session data collection fast, reliable, and flexible—covering offline use, intuitive navigation, and centralized timers so you can keep working without interruption. It explains how to record every measurement type (frequency, percentage, interval, intensity, duration, task analysis, targets, and prompts), review and edit entries, and manage active items for streamlined workflows. Use it to confidently collect accurate, auditable client data during sessions.