This is chakras balancing by solfeggio tones application.

Vibration is everything. And every vibration has its own frequency. By exposing the mind and body to the Solfeggio frequencies, you can easily achieve a greater sense of balance and deep healing. The Solfeggio frequencies align you with the rhythms and tones that form the basis of the Universe.

Seven chakras balancing solfeggio tones included in the application:

Muladhara meditation - 396 Hz , red color , root chakra.
Svadhisthana meditation - 417 Hz , orange color , sacral chakra.
Manipura meditation - 528 Hz , yellow color , solar plexus chakra.
Anahata meditation - 639 Hz , green color , heart chakra.
Vishuddha meditation - 741 Hz , blue color , throat chakra.
Ajna meditation - 852 Hz , purple color , third eye chakra.
Sahasrara meditation - 963 Hz , violette color , crown chakra.