Smartguard by Hastel

The smartguard app allows you to register and configure the smartguard tank monitor, then check the levels anytime from anywhere in the world. Alerts for low levels, fills and unexpected drops are sent to your phone as they happen and levels, signal strength, battery etc are displayed alongside level graphs. You can register from 1 to 100 tanks in the app and monitors are available for a variety of liquids - not just fuel. If you have a smartguard get the app!