This is a submission for the Gemma 4 Challenge: Build With Gemma 4 .

What I Built

TripSync is a live AI travel planner that takes plain-English trip descriptions and returns real destination recommendations with flight estimates, hotel options, and booking links.

Live app: tripsync-ilao.onrender.com

GitHub: github.com/Tripsync-justmeMedia/tripsync

Stack: Python / Flask · Vanilla HTML/JS · SQLite · Render · Ollama · Gemini API

Why Gemma 4

Every search on TripSync hits an AI API. Every destination card, every itinerary, every refinement — that's a call to a cloud model. Free tiers end. Traffic grows. And suddenly the thing you built for enjoyment is costing you money before it's made you a cent.

Gemma 4 solved two problems at once:

The cost problem — running locally means zero marginal cost per query. No traffic spike will break the budget.

The privacy problem — travel data is personal. Budgets, travel dates, who you're travelling with.…