title: Storage quota for app in iPhone / iPad
body: <p>I am just wondering what's the storage size for an iPad/iPhone app to use?</p>
  
  <p>For memory, it is sure that every app can only use 100MB-like memory.</p>
  
  <p>How about the storage? I mean the file system in iPad/iPhone app?</p>
  
  <p>Use as much as I want until the file system is full? or something like that?</p>