Campus Navigation App

The problem

We noticed it as juniors trying to get to class: Allen High School is one of the largest campuses in Texas, and the hallways bottleneck hard between periods. New students lose the most time, because the shortest route on a paper map is rarely the fastest route through the building. We pitched a navigation app to the district and built it as an unpaid internship under Allen ISD.

What we built

The app has three surfaces. The home page shows your current schedule with a button that routes you straight to your next classroom. The map page renders the campus over the platform map background - Apple MapKit on iOS, the Android equivalent - but the routing itself is ours: we digitized the campus in QGIS into a graph of hallways, stairwells, and doors, then implemented A* search over it to compute efficient travel paths. The settings page handles account and map configuration.

Neat Features

• Implemented the A* pathfinder and the map graph it traverses.
• Built Firebase authentication for sign-in and sign-up, plus schedules, availability tracking, and user settings in React Native and Expo.
• Worked directly with Allen High School administrators on deployment and adoption across the student body.