Blink to kW
Blink 2 kW is a nifty little app that helps you estimate the effect passing through your electricity meter at any given time. Many such meters indicate the effect passing through by a flashing led indicator. By setting the app to the led’s frequency in relation to load (which is often stated on the electricity meter) and tapping the light bulb in the app in the same rhythm as the light on the meter, the effect is estimated.
Download the Windows version from Microsoft Store or the Android version from Google Play.