I want to make a app that can detect what room to go to based on student's schedule

This looks like a job for Dijkstra's Algorithm . To minimize the number of combinations of (from,to,time) you could create a graph (nodes and edges) for locations on campus and paths between locations marked with time estimates. Nodes would be: Entrances and exits to buildings rooms in buildings …

School room app

MIT App Inventor Help

ABG April 30, 2024, 9:44pm 12

I doubt the map component would help you for this for interiors.

The algorithm is famous.

You would have to learn lists to code the algorithm.