Non consumable IAP tracking.

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i considering adding iap premium features on next app. how id best track whether user has purchased iap? saving bool in nsuserdefaults sensible?
 

i not recommend nsuserdefaults requires security. iap area feel should better secured ensure cannot access free. way handle apple's encrypted keychain can extend cloud. doing latter allows user use iap on other devices own (with same cloud account) or when upgrade devices. think customer service perspective. however, if keep local better protected nsuserdefaults better holding things setup/preference data.
 


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