Built by a developer, for everyone
Making AI-powered fitness accessible — no personal trainer needed, no paywall required. Just smart workouts that adapt to you.
Our Journey
Completed
Production-ready AI integration
Shipped a live GPT-powered trainer with workout generation, user dashboard, and secure data storage — mobile-first from day one.
- •Privacy by design — no signup needed to try
- •Scalable infrastructure with secure auth
Current
Adaptive personalization & insights
Building real-time profile layer that adapts workouts dynamically. AI-driven progress tracking, proactive recommendations, and contextual feedback loops.
- •Personal profile & preferences
- •Dynamic plan adjustments based on adherence
- •Insight surfaces: completion trendlines, session streaks
- •Hook into our first AI dedicated server
Future
Unified in-app intelligence
Nutrition planning, proactive AI scheduling, and cross-channel orchestration. Roadmap includes tighter integrations and end-to-end automation.
- •In-app artificial intelligence proactive and reactive suggestions
- •Nutrition & habit layers
- •Deeper integrations and auto-progression
Completed
Production-ready AI integration
Shipped a live GPT-powered trainer with workout generation, user dashboard, and secure data storage — mobile-first from day one.
- •Privacy by design — no signup needed to try
- •Scalable infrastructure with secure auth
Current
Adaptive personalization & insights
Building real-time profile layer that adapts workouts dynamically. AI-driven progress tracking, proactive recommendations, and contextual feedback loops.
- •Personal profile & preferences
- •Dynamic plan adjustments based on adherence
- •Insight surfaces: completion trendlines, session streaks
- •Hook into our first AI dedicated server
Future
Unified in-app intelligence
Nutrition planning, proactive AI scheduling, and cross-channel orchestration. Roadmap includes tighter integrations and end-to-end automation.
- •In-app artificial intelligence proactive and reactive suggestions
- •Nutrition & habit layers
- •Deeper integrations and auto-progression
Tech Stack
Frontend
- Next.js 15
- React 19
- TypeScript
- Tailwind v4
- Framer Motion
Backend
- Azure Functions
- Fastify
- Node.js
AI
- OpenAI GPT-4o mini
- Azure AI Foundry
Infrastructure
- Container Apps
- ACR
- GitHub Actions
Database
- Firestore
The Story
KetzalFit started as a solo project born from frustration — most fitness apps either lock useful features behind expensive subscriptions or overwhelm you with generic plans. I wanted to build something different: an AI coach that creates truly personalized workout routines, available to everyone for free.
Privacy comes first. Your workout data stays minimal, and we never sell or share it. The app is mobile-first because that's where workouts happen — in the gym, at home, on the go. Every interaction is designed to feel fast and natural on a phone screen.
The vision is simple: use AI to democratize what used to require an expensive personal trainer. Whether you're a beginner picking up weights for the first time or an experienced lifter looking for structure, KetzalFit adapts to where you are and grows with you.