The SLII App is designed for individuals and teams participating in Blanchard's SLII Model programs. This productivity tool serves as a quick reference for leaders to improve their relationships and performance by applying the SLII principles effectively. It addresses critical leadership moments, such as preparing for conversations with team members or articulating needs to superiors.

Key features of the app include a diagnosis wizard that assesses an individual's development level on specific goals or tasks, alongside actionable tips for implementing SLII principles. Additionally, the interactive SLII Model visualizes the characteristics of various development levels and corresponding leadership styles, while providing on-demand information to support users in their leadership journey.