DAYPlayer is a music player.
It removes any unnecessary features so that anyone can play ones favorite music very easily.
It is simple, convenient, and easy to use.
You can upload your song files in your computer onto the phone through WiFi.
This is a very convenient feature because you can upload files without connecting your phone and the computer by USB cable.
Of course, it is also possible to upload files by USB cable.
(Run iTunes -> Select my device -> Select App -> File Sharing : Select DAYPlayer and drag & drop the song files into the Day Player Documents section.)