Want to calculate how much electric an item uses easily?
Use this app.

Maybe your housemate,tenant or landlord is claiming its your fault for the high electricity bills. Use this quick calculator to prove a few facts.
No adverts, less than 5mb and does not store your data on the net requires no permissions.
Stores the wattage of different electricity items in the app so you can see just how much you raspberry pi can save v a desktop pc