
Marc Gionet
I have a small indoor year round vegetable garden. Thanks to this very simple and easy to use app, I finally know how much I am paying per month for the grow light electricity usage. I had done the calculations by hand in about an hour. But with the app, I simply entered the three values (wattage of my lights, how many hours per day I set the timer, and the cost of electricity in my area), and didn't even need to press go or anything. It actually calculated even as I entered the three values.

Justice Ndekesse
This app is helpful to calculate the cost of electricity. But... the only thing I don't know the voltage you're using to update the result. Kindly add an option to choose a required voltage for a country. Some countries use 220V and some 110V.
2 people found this review helpful