AI fitness and nutrition coaching app
FitYar
A consumer fitness app built around Borzoo, a conversational AI coach that turns a chat into a personalized training and nutrition program.
400+exercises in the library, each with video, target muscles, equipment and form guidance.
Project images
Context
What the system had to do
The product needed an AI coach that produces usable, structured training programs — conditioned on each user’s goal, fitness level, training history and available equipment — while tracking, execution and nutrition had to keep working whenever the AI layer does not.
What I built
Decisions and delivery
- Integrated OpenAI GPT models into the product surface: designed the conversation flow, the system prompts and the structured-output handling that turn a chat session into a usable training program.
- Built the surrounding product and data model independently of the AI layer, so core tracking and execution work without it.
- Delivered step-by-step workout execution with set, rep and weight logging and rest timers; calorie and macro tracking against a food library; water and habit tracking; and a 400+ exercise library with instructional video, target muscles, equipment and form guidance.
- Own backend, infrastructure and AI integration alongside one frontend engineer.
Outcomes
What it delivered
400+
exercises in the library, each with video, target muscles, equipment and form guidance.
—
Core tracking and execution run independently of the AI layer.