Arnav Nimbkar@arnyz

AirTrace is a comprehensive, privacy-focused web application designed to help individuals track, understand, and minimize their exposure to poor air quality. While most weather apps only show the current Air Quality Index (AQI) for a general area, AirTrace takes a personalized approach by calculating your cumulative "Exposure Index" based on where you actually go and how long you stay there. Users can seamlessly log their daily movements, such as commuting, working at the office, or exercising in the park. For every location visit, the backend automatically fetches real-time, highly localized US EPA AQI data (based on PM2.5 levels) using the Open-Meteo API. AirTrace then crunches these numbers to provide a precise, weighted daily average of your air quality exposure. The intuitive, modern dashboard gives users a clear overview of their day. Features include an interactive Esri-powered map charting out their route with color-coded markers indicating the AQI at each stop, an AQI timeline trend chart, and a detailed breakdown of time spent in different EPA categories (e.g., Good, Moderate, Unhealthy). Built with a robust React and Tailwind CSS frontend and a fast Express/SQLite backend, all data is processed efficiently and stored reliably. AirTrace empowers users with actionable data visualizations, helping them identify high-exposure hotspots in their daily routine and adjust their habits for a healthier life.

ExitCheck is a mobile-first exit dashboard designed to simplify daily departure routines. Triggered by tapping an NFC tag at your door frame, the system gathers contextual data in parallel. It queries schedule invites (Google Calendar API), geocodes and routes travel times (Nominatim + OSRM), fetches weather (Open-Meteo), and tracks personal gear checklists and lock states (Prisma + SQLite). A core architectural feature is its resilient AI orchestrator powered by Google Gemini 1.5 Flash. If Gemini API limits or network timeouts occur, a fallback layer serves a structural layout with live routing data, keeping the app 100% operational.

🌎 Hybrid Hackathon | 💻 Online Build: September 10–16, 2026 | 📍 On-site: September 15–17, 2026 The official hackathon of AI Infra Summit — co-organized by Kisaco Research and lablab.ai. Build production-grade AI applications on the modern AI infrastructure stack, alongside 8,000+ attendees, researchers, founders, and infra leaders. 📍 On-site Venue (September 15–17): Santa Clara Convention Center 5001 Great America Pkwy, Santa Clara, CA 📍 On-site participation is by invitation only. Travel and accommodation expenses will not be covered.

🌎 Online Hackathon | 💻 Month-long challenge | Dates: Sep 1–30, 2026 | 🏆 $10,000 Prize Pool ($5k cash + $5k in AAI credits) A month-long online challenge run by lablab.ai together with AssemblyAI, the Voice AI infrastructure company for builders. Every participant builds on AssemblyAI. You can join at any point — registration stays open for the whole build window, so you can start on day one or pick the project up halfway through and still submit. 🌍 Fully online hackathon. Join and build from anywhere in the world.

🌎 Online Hackathon | 📅 August 3–10, 2026| 💻 Powered by native.builder The official native.builder hackathon, hosted by NativelyAI and lablab.ai. Join founders, developers, designers, and builders to create real AI-native applications powered by native.builder: from idea to deployed product, fully in the cloud. 💻 This hackathon is fully online. No travel required.