LISSA (Language & Interactive Stimulus Support Assistant) is a professional stimulus presentation app designed for ABA therapy and structured learning environments, created by a Board Certified Behavior Analyst. LISSA enables clinicians, educators, and caregivers to build customizable receptive and expressive teaching sessions with precise control over stimulus presentation. Sessions can be tailored to individual learners by selecting instructional targets, adjusting field size, and modifying presentation settings to support skill acquisition and generalization. Key Features: Receptive and expressive stimulus presentation modes Customizable field sizes and flexible presentation formats Image-based and word-based stimulus options Over 500 images across categories to teach from Session-level controls including labels, contrast, and rotation Client-specific saved sets for efficient session preparation Clean, distraction-free interface designed for therapy use LISSA is built to support structured teaching, reduce preparation time, and promote consistency across sessions. The app is intentionally flexible, allowing clinicians to adapt instruction to a wide range of learner needs and instructional goals. Important Note: LISSA is a stimulus presentation tool and does not replace clinical judgment, supervision, or required clinical documentation. Clinicians and organizations are responsible for ensuring appropriate, ethical, and compliant use.