Measure your Brain in 5 min

The Circl headset uses electroencephalography (EEG) to record your brainwaves, passively sensing the tiny fluctuations in voltage generated by brain activity with sensors that rest on your scalp.

The Circl headset automatically connects to Circl's app.

You play a neuroscience game called Oddball where we show you a series of coloured circles on screen and ask you to tap the screen when a specific colour circle appears. This stimulates your visual cortex and produces the voltage fluctuations we measure.

The speed and power of your neural response are analyzed and presented to you in the app.

Regularly measure your brain performance and the Circl app will chart a trend of your brain performance over time.