The Cold Extractor is an app that allows users to detect if they are catching a cold or other illness. It provides information about the illness, including expected symptoms, duration, and prescribed medication. The app works by having the user point their phone's camera to their mouth, where it scans the throat and tests saliva and temperature to determine the illness. It is intended to help people identify illnesses from home rather than visiting the hospital, and could especially benefit countries with limited healthcare resources by allowing doctors to quickly diagnose patients.