Itunes is a apple application which let you connect your pc with your iphone. This app lets you to make changes in your iphone directly in your pc. You can also add ringtones of your choice to your iphone.Itune cannot be used by everyone as there are lot of instruction which should be kept in mind.
Functionality-you can update your iphone and unlock your iphone through itunes.
user friendly-It is not userfriendly app as it is diificult to operate and understand.
ease of installation-It is very difficult to install itunes as there are so much points in way of download.
Feature-Provide you paid music
let you handle your more than 1 ios device at same time.
Let you add your favouarte music and ringtones.
Service and support-Apple provides a proper service and support system but are time consuming due to various process.