Binaural Beats vs Isochronic Tones
Quick answer: Binaural beats rely on two slightly different tones delivered separately to the ears; isochronic tones use a single tone or sound that pulses on and off rhythmically.
Binaural beats
The rhythmic percept is generated by the auditory system from two different ear-specific frequencies. Stereo headphones are commonly used.
Isochronic tones
Isochronic stimulation uses obvious periodic pulses in the sound itself. It can be heard over speakers because the modulation is physically present in the audio signal.
Can one be called better?
Not reliably. Commercial comparisons often go beyond the evidence. The best choice for a listener may depend on comfort, preference and the specific recording.