How to use this. Pick a carrier tone and a pulse rate, set the volume low and comfortable, and press start. In Steady mode the pulse rate stays fixed for the whole session. In Drift mode it ramps smoothly from one rate to another over the time you set — useful for easing from a higher alpha/theta-border rate down toward deeper theta.

Not a medical device. This is a simple audio tool, not a clinical or diagnostic instrument, and entrainment effects vary widely between people. Stop if you feel dizzy, anxious, or unwell. Don't use it while driving or operating machinery. If you have a history of seizures or epilepsy, check with a doctor before trying audio entrainment.