Why am I being asked for a payment method for an app that is free ?
I am trying to download free app and the Apple Store keep asking me for payment information.
iPhone 7 Plus, iOS 11
You can download free apps, but you may need to have a valid payment method on file, even if the app you want to download is free.
Free apps has also In-app pruchase.
See -> Buy additional app features with in-app purchases and subscriptions
Buy additional app features with in-app purchases and subscriptions
See also -> Apple Media Services Terms and Conditions
Legal - Apple Media Services - Apple