Calm anxiety, help focus, fall asleep easier, or drown out harsh ambient sounds. Features:- Six High-Quality Colored Noises, generated in-house.- Options to play "Raw" noise with all frequencies or "Smooth" noise that focuses on lower frequencies.- Can play in the background without needing the app to be open.- Can be played on external devices through bluetooth.- Sounds are stored offline and require no mobile data usage.- No time limit. You choose how long you want to listen.Included Colored Noise Descriptions:- White Noise: Has been found to mask loud ambient noises and help concentration.- Gray Noise: Similar to white noise, but with less harsh mid frequencies.- Pink Noise: Has been found to lower brain activity, helping to reduce anxiety and improve focus.- Orange Noise: Has been suggested to help alleviate the symptoms of depression.- Brown Noise: Similar to the brain’s resting state, helping to improve relaxation.- Green Noise: Similar to brown noise, but without any “man-made” frequencies and thus most resembling the frequencies of nature.Start relaxing with Sonus today!