Before that, I'm not sure if this is the right place to ask newbie question. If there's a place you know that's great for newbies, please let me know. I need it badly. Stackoverflow is getting too obsessed with quality questions and reputation points that they tolerate newbie questions no more . Hence I'm turning to forums. Ok, back to question. Say I created a standard NSObject class. Store some user scores in an array to this class. How can I write this data to a file, so that the app can later retrieve this information even after the app quits?