You want to be able to change the alarm tone that the Apple-provided alarm app uses?
Nope.
Apple does not allow third party apps to muck around with the settings of their apps.
Pregunta
I am developing an alarm based iOS application where the user can set the alarm tune from ring tone menu. I am new to iOS so I do not know if that is possible or not?
Solución
You want to be able to change the alarm tone that the Apple-provided alarm app uses?
Nope.
Apple does not allow third party apps to muck around with the settings of their apps.