Zonalyze

Objective Location Intelligence & Grounded Environmental Risk Debriefs

One-Liner

An open-source, ₹0-cost geospatial location audit platform that evaluates any coordinate on Earth in real time using verified environmental telemetry, physics-based heuristics, and zero-hallucination AI.

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The Core Problem & Solution

• The Problem: Property websites use biased, unexplained “livability scores” to market homes, and generic AI tools routinely hallucinate nearby amenities, transit distances, and air quality.
• The Solution: Zonalyze replaces guesswork with ground truth. Users drop a pin or enter an address to receive a forensic location dossier built purely on open sensor networks and mathematical models.

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What Zonalyze Does

1. Real-Time Air Quality & 72h Trends: Live PM2.5, PM10, and AQI telemetry with 3-day historical sparklines from open sensor arrays.
2. Acoustic Noise Physics Model: Computes decibel proxy exposure using deterministic distance attenuation ($L = L_0 - 20\log_{10}(d/d_0)$) from arterial roads and railway tracks.
3. 3,000m Civic Infrastructure Audit: Maps exact Haversine distances to hospitals, transit hubs, schools, pharmacies, and parks, complete with interactive turn-by-turn route calculation.
4. Grounded AI Forensic Debrief: Google Gemma acts strictly as a forensic auditor, producing an empirical analysis, an on-site physical inspection checklist, and an interactive Q&A assistant with zero hallucinations.
5. Multilingual Audio Debrief: In-browser natural voice playback in English, Hindi, and Bengali.
6. Sub-50ms Geospatial Cache: MongoDB 2dsphere spatial caching prevents redundant external API calls for coordinates audited within 150m in the past 7 days.

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Tech Stack & Keyless Infrastructure

• Frontend: React 18, TypeScript, Vite, Tailwind CSS, MapLibre GL JS (Carto Voyager vector basemaps).
• Backend: Node.js, Express, TypeScript, Mongoose.
• Database: MongoDB Atlas (M0 Free Tier) with 2dsphere index + 7-day TTL auto-expiry.
• Telemetry & Geodata: Open-Meteo, OpenStreetMap Nominatim, Overpass API (100% keyless, ₹0 cost).
• AI Engine: Google Gemma via Google AI Studio (@google/genai).

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