Because many cars don't have the possibility to remotely monitor data. And even if they have - the app might be bad or the manufacture will simply drop support after a few years. Often they want you to pay for the service. EVNotify is free and completely open source. And under continous development. You can bring your ideas in the app. But you might be asking, why you need such an app to see your data. Image the following situation: You are on a road trip and you charge. While charging, you are drinking a coffee - and you want to know, when you can end the charge and continue with driving. Without EVNotify you can't. But with EVNotify you can sit in the Cafè and watch the state of charge increasing. Or another situation: You go back and the car charges. The charge interrupts due to an error. After two hours you come back - the car hasn't charged. With EVNotify you will receive an instant notification, if charge aborted. EVNotify also helps you to track your charges, consumptions and drives. It can also help you to find nearby stations to charge your electric vehicle.