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Fitness and nutrition coaching app

FitYar

A fitness app with a conversational coach, personalized training programs, workout logging and nutrition tracking. I co-founded it and handle backend, infrastructure and GPT integration.

400+exercises with video, muscle groups, equipment and form guidance.

Context

What the system had to do

FitYar’s coach, Borzoo, turns a conversation about goals, experience and available equipment into a structured training program. Workout and nutrition tracking still need to work when the model is unavailable.

What I built

Decisions and delivery

  • Integrated GPT models and designed the conversation flow, prompts and structured-output handling for personalized training programs.
  • Kept the tracking data and workout execution independent of the model integration.
  • Delivered workout execution with set, rep and weight logs and rest timers; calorie and macro tracking against a food library; and water and habit tracking.
  • Built a library of more than 400 exercises with video, target muscles, equipment and form guidance.
  • Own the backend, infrastructure and model integration, working alongside one frontend engineer.

Outcomes

Results and status

  • 400+

    exercises with video, muscle groups, equipment and form guidance.

  • —

    Workout and nutrition tracking work independently of the model.

Project images