Typically a gas delivery app
Download here
to view the project on Googles play store click the above link
it is typiclly an Android App that the user can order gas online and Gas is delivered to them
Setup the database on firebase and change the write permision to be like this
{
“rules”: {
“.read”: “true”,
“.write”: “true”
}
}
also checkout the firebase how to set up a database