I want to create a Fuel usage app

[Jon_Geer]

I want to create a fuel usage app. One that I can track a specific fuel type, user, vehicle, pump reading,
vehicle odometer, gallons pumped, and have them sign.

I want the users to be able to have app on mobile device and be able to fill out form. After form is filled out by them following each step, it then will email me a completed form.

But for Appsheeet billing, I don’t know where to begin.

Heeeellp.