You do have to be signed in when making an app purchase because iTunes and The App Store need to know what account to withdraw money from. Hope that Helps:)
An in app purchase is things like coins and other special things for a game that requires real money.
One could purchase a subscription to Dinamalar in most App stores, including the Android app store, Blackberry app world, and the app store for Apple products.
To restore in-app purchases in Infinity Blade 2, you must download the in-app purchase again. You must use the same iTunes store account name from the original in-app purchase.
No. You need an Apple App Card to purchase Apps from the App Store!
In app purchases are transactions that involve products and features offered within the app
It means if you have bought anything on the particular app before you updated it you can restore those things you bought on that app
Purchase it from the App Store.
Yes. of course you can. You cannot in-app purchase but theres a way around the in-app purchase error. But you can still by normal apps.
Uh? Do you mean the App Store app? That is where you can purchase more apps.
When you "Gift an App" Basically it's self explanatory, you purchase the app and send it to someone and they can download it for free. So really, you give a app as a gift! But if you want to purchase it for yourself as well you will need to buy it again.
You can purchase Amazon books (physical or digital) on the Amazon app. You can also purchase digital books through Amazon's Kindle app.