Fever Tracker: Your Daily Companion for Tracking Body Temperature and More. 🎯 Fever Tracker is a simple and easy-to-use app designed to help you monitor your health. A fever tracker and symptom diary is a digital tool that helps individuals to track and record their body temperature and any related symptoms of illness. ❓ What is a fever? When your body temperature is above the normal range, you may feel cold or pain in your muscles. ❓ What is a Fever Tracker app? This thermometer app helps