• Features music specialist best solution for learning design in Pinkaide • Direct production of the original content source 20 for the study and concentrate • Direct recording 20 kinds of natural effects (rain various nature sounds, white noise, sound life closely, etc.) • Can be set freely to suit the sound directly to your preference even more effective! • Enable each control of natural sounds. • Background playback. You can use other apps while playing. 'Study Aide' names are made mean