title: How do you force an iPad home screen bookmarked web app to refresh?
body: <p>I've run into a problem where I add a web app to my iPad home screen (iOS 5.0.1 iPad 2), and when I open it it appears to be caching something behind the scenes, independent of Safari. </p>
  
  <p>I've cleared out everything from Safari that's available in Settings (Clear History and Clear Cookies &amp; Data), and when I navigate to the web app with Safari I see the app in its current state. However if I open the home screen bookmark I get the app in a pre-changed state. </p>
  
  <p>I've seen a lot of information about using a cache.manifest to cache resources for offline use, but I'm not sure if that's relevant to this since I would like the exact opposite: cache nothing.</p>
  
  <p>I've gone to the level of not even testing external resources; if I change some arbitrary test string in the body element of my index.html, the home screen bookmark does not show the updated text.</p>