in this tutorial i will show you how to redeem a promo code / voucher in iTunes
First you need a US account. If you dont know how to get one follow this tutorial
in iTunes “sign in” into your US account:
enter you “email” and “password“:
in the upper corner in iTunes click on the drop down menu and hit “redeem”
enter your promo code / voucher:
You re done! your app should download shortly.
Next time you sync your iPhone/ iPod Touch/ iPad your app will be installed!