well the app would work if it was the right app lol Place to input the price I am paying. Place to input the meter units used. And calculation behind the scenes to multiply/divide cost of those units. and an output in poundsI don't think an app will work as that will just tell you the total cost of all the electricity ever used.
The price per unit should be on your bills
Read the meter, wait a day/week then read it again.
Take the first reading off the second and that's how many units you have used that day/week
Multiply that by the cost per unit on the bill and that's how much its costing you to run
To be honest I am just being idle as I am feeling depressed and burnt out lately and lockdown is ended soon...

I just shelled out for 2 sensors and a fuel filter on the Navara and the Fuel filter they wanted 92 quid...I just despair at times. And guess what limp mode still comes on when you boot it! We are starting to think its been mapped before I got it! as its fine when the fifth wheel is hooked up behind it or a heavy trailer....anyway I digress (on my own thread as well) lol