eFlow is a comprehensive application designed for iPhone users to monitor the performance of electric and hybrid vehicles. The app provides detailed insights into battery health, including voltage, energy content, and temperature. Users can compare their vehicle's battery condition against averages from similar models, giving a clear perspective on battery longevity and overall health.

The application features a real-time dashboard that displays sensor data for the motor, battery, and charging metrics, with the option to record charging curves. eFlow also aids in the buying and selling of used electric cars by offering transparency regarding battery health, potentially increasing resale value. Additionally, it supports Apple CarPlay for convenient access to vital data directly from the car’s display. An OBD adapter is required for connectivity, with compatibility for various brands and models.