Calculectric

The app calculates the cost of operating electronic devices of all sorts. All you need to know is your electricity tariff, and the power consumption of the device (it is explained in the app how to check consumption). You can calculate the cost in cent per hour and you can also calculate the cost of operating the device for a month in dollars. A tariff table* for over 120 countries is linked to the app for your convenience.*The tariff table is taken from Wikipedia and the prices are in US dollar, you might need to convert the price to your local currency.