LED Flicker Finder is an Android utility app developed by Rayonics.com that helps you detect flickering LED bulbs. It is a useful app for those who have multiple LED bulbs in a room and are struggling to determine which bulb is causing the flickering. With this app, you can place your phone on a flat surface with the screen facing up directly under the suspected LED bulbs. The app will measure the percentage of flickering to locate the problematic bulb.

This app can also be used to measure varying light levels by setting a flicker percentage threshold level. When the light flicker exceeds this threshold, the app will make a beep and increment a flicker count. LED Flicker Finder uses your phone's built-in light sensor to rapidly measure light intensity and detect any flickers. However, it is recommended to use a phone with a light sensor that updates at least 10 times per second to detect brief flicker events. The app is free of cost and does not contain any ads or require special permissions.