KettleCost: Energy Calculator

KettleCost is an energy cost calculator for the appliances in your home. Pick an appliance, keep or change its typical watts, say how long it runs and how often, and type the rate from your electricity bill. It shows what that appliance costs per use, per month and per year.

APPLIANCE COSTS, RANKED
Every appliance you add goes into one list in cost order, dearest first, with the estimated monthly total for the appliances you have added at the top. See which ones have the highest running costs on your own settings.

40 TYPICAL APPLIANCES
Kettle, oven, air fryer, microwave, hob, fridge freezer, washing machine, tumble dryer, dishwasher, TV, games console, desktop PC, electric heater, dehumidifier, electric shower, hair dryer, electric car charging and more. Each one starts with typical watts and a typical time, labelled as typical, and you can edit the watts and usage time to match your appliance and how you use it.

FRIDGES, OVENS AND HEATERS
Appliances with a thermostat switch on and off to hold their temperature, so they draw full power only part of the time. KettleCost lets you set that share, and starts each one with a typical figure.

COMPARE TWO APPLIANCES FOR ONE JOB
Air fryer or oven for a roast chicken. Microwave or oven for a baked potato. Tumble dryer or heated airer for a load of washing. Pick two appliances, set the minutes each one takes, and see the cost per job, per month and per year, and which has the lower estimated electricity cost. Add a purchase price to estimate how many months the running-cost saving might take to cover it. Share the comparison as a clean picture card.

YOUR OWN RATE
Enter your electricity unit rate per kWh from your bill and, if your bill has one, the daily standing charge, in your own currency. Until you do, the app uses a typical rate for your country and says so on screen.

ONE-TIME UNLOCK
The standard version keeps up to eight appliances, every typical appliance, one comparison card a day and a small banner on the house list. The one-time unlock adds unlimited appliances, rooms to group the house list, day and night rates for a cheaper night tariff, a standby check that estimates the yearly saving from switching appliances off at the wall, comparison cards without the name mark, and removes the banner. One payment, no subscription.

NO ACCOUNT
Your appliances and rate stay on your phone. A backup file moves them to a new phone.

Every figure is an estimate: watts, times time, times the rate you typed. KettleCost does not measure your meter, read your smart meter or know your tariff, and it does not suggest a supplier.

Questions? Write to support@clearstackapps.com