The SDK Gaming Fuel Calculator Web App can be displayed on a smartphone or tablet (Android or IOS) or a computer (Windows 10 or MacOS) using the following link: https://livetiming.sdk-gaming.co.uk/fuel.html?room=MY_ROOM (you can find the exact URL for your room at iRacing Live Timing F3 Settings / Links / Fuel). With iRacing Live Timing running and broadcasting data in room MY_ROOM the following screen will be displayed:
You can find the full instructions for this new Web App at: Fuel Calculator Manual