You can discover few amazing iOS apps like Google Earth and Adobe Ideas on the iTunes Apps store. Definitely, all are free to download but there is a provision to having a US based Apple ID to install them on to your iPhone or iPad.
Even though it is very simple to figure out the problem by creating another Apple ID. But at first you need to sign-out of your present account. In case you do not have a U.S based credit card, you required to set ‘none’ as the payment method. Now you allowed to download US apps with the new Apple ID.