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informal.

AI travel app built at Alif × Replit hackathon in San Francisco

Next.jsTypeScriptNode.jsPostgreSQLGemini API

What it does

informal. is a full-stack AI travel application that leverages LLM-based recommendation logic and dynamic frontend interfaces to help users plan personalized trips. Built at the invite-only Alif × Replit hackathon at Founders, Inc. headquarters in San Francisco, competing with top builders worldwide.

How it works

  • •Users input travel preferences and constraints
  • •Gemini API processes user inputs to generate personalized travel recommendations
  • •LLM-based recommendation engine analyzes destinations, activities, and itineraries
  • •Dynamic frontend interfaces adapt based on user interactions
  • •PostgreSQL database stores user preferences and trip data
  • •Full-stack architecture enables seamless data flow between frontend and backend

Tech stack

Next.jsTypeScriptNode.jsPostgreSQLGemini APIReact

My contribution & impact

  • ✓Engineered full-stack application under time constraints at competitive hackathon
  • ✓Developed at Founders, Inc. headquarters competing with top global builders
  • ✓Implemented LLM-based recommendation logic using Gemini API
  • ✓Built dynamic frontend interfaces that adapt to user inputs
  • ✓Delivered production-ready prototype within hackathon timeframe
  • ✓Integrated PostgreSQL for robust data persistence

What I'd improve next

  • →Add collaborative trip planning for groups
  • →Integrate booking APIs for flights and accommodations
  • →Implement real-time price tracking and alerts
  • →Add mobile app version for on-the-go access