Social feed for Facebook: The data is cached for 5 minutes
Gallery for Instagram App: The data is cached for 5 minutes, but the app will auto-refresh every 10 minutes. Therefore if you want to see the new posts between 5:01-10:00 minute the app needs to be refreshed. This can be done by adding another app after the 5 minutes mark and the screen shows Instagram feed again with updated posts.
Twitter Search App: 15 Tweet results are cached for 5 minutes. The app will refresh after all tweets are shown.
Twitter Timeline: 20 Tweet results are cached for one minute