Sometimes LED bulbs flicker intermittently. If you have many LED bulbs in a room, it may be difficult to determine which bulb is at fault.

Turn on this app and place your phone on a flat surface (screen facing up) directly under the suspected LED bulbs.

The app will measure the percentage of LED bulb flickering to help you locate the bulb that is at fault.

You can use this app anytime that you want to measure varying light levels. You can set a flicker percentage threshold level. When a light flicker exceeds this threshold, the app will make a beep and increment a flicker count.

This app uses your phone's built-in light sensor to rapidly measure the light intensity and detect any flickers. Some phones have a more responsive light sensor than others. A light sensor that updates at least 10 times per second is recommended to detect brief flicker events. The app's Settings screen will show you the update rate of your phone's light sensor. See the app's Help screen for more information.

This app is free - with no ads or special permissions.