A free program for Android, by MukhinApps.
What is Critical Flicker Fusion?
Critical Flicker Fusion is a simple app that can be used to determine the level of fatigue of the user. It is based on the fact that all humans have a certain level of visual sensitivity.
When the eyes are tired, the sensitivity of the retina drops, which results in a reduced ability to see small differences in brightness and color.
The most common symptoms of fatigue are drowsiness, lack of focus, and inability to concentrate.
How can I use this application?
The app has a standard mode and a manual mode.
The standard mode is based on the critical flicker fusion frequency.
The manual mode allows you to change the frequency of the flashes by using a seek bar.