SleepFic: Neurological Sound

SleepFic is the world's first and only application that helps you fall asleep with neurological sound waves.
-Totally free
-Can be used offline.
-There is no piano sound.
-No nature sounds.
There are four sleep modes.
Fast Sleep: With special sound waves, it gives a light sound wave to the brain to sleep fast, just close your eyes.
Deep Sleep: You can use it for more efficient sleep. Get more rest and sleep faster
Rem Sleep: The most beautiful moment of sleep and an experience very close to deep sleep is made for those who do not like heavy sleep but want quality sleep.
Astral: It would be great if you knew a little about Astral before using it. A mod that can help you for a great experience. And the first in the world!