Ream App Limited, an online mental health service for adults with ADHD, transformed its coaching approach by integrating Hume's Empathic Voice Interface (EVI) to deliver a more engaging and personalized experience. EVI enabled daily 5-minute AI coaching calls via Twilio's outbound phone calling API, resulting in a 2x increase in user engagement compared to text-based systems. The system provided empathetic conversations, remembered user habits and preferences, and integrated seamlessly, boosting user retention by significantly improving the emotional support and ease of use provided by EVI. By leveraging voice-based AI, Ream App Limited achieved a transformative impact on its coaching experience, making support more accessible, engaging, and financially viable.