About The Project

Worlds of Hello is a multi-app platform designed to support children with speech therapy through engaging, AI-driven experiences whilst connecting with speech language pathologist for powerful insights into the child's learning journey. To view the demo and more visit worldsofhello.com

Technologies Used

• Flutter – Core framework for building cross-platform mobile

• Figma – UI/UX design and prototyping

• Gemini (LLM) – Generates intelligent session notes and insights

• ElevenLabs – Voice generation and speech synthesis

• LiveKit – Real-time communication and orchestration

• Rive – Interactive animations for engaging user experiences

Key Takeaways

• Gained experience translating speech therapy research into practical voice AI applications.

• Tackled the challenge of achieving stable sub-second interactions from voice capture to response to a child.

• Overcame technical hurdles, including processes that required manual development instead of relying on AI due to the sensitive nature of child data.

• Developed a deeper understanding of the state of voice AI in 2025, its capabilities, and limitations.

Client's thoughts

"I had the pleasure of working with Donell on this project, and I am thoroughly impressed with his skills, professionalism, and dedication. Donell consistently delivered high-quality code and demonstrated a strong understanding of the technical requirements. His problem-solving abilities and attention to detail were evident throughout the project, allowing him to overcome challenges efficiently."