How to automatically download episodes once available?

Automatically downloading episodes once they're available needs to be enabled in the Settings. It is turned off by default. This feature downloads all new episodes after refreshing and the newest episode after subscribing to the feed.

To turn on Auto Caching:

1. Open the Instacast Settings
   
2. Enable "Auto Cache". This setting also respects the "Enable 3G" setting. So, if you want downloads to happen automatically even when you're on 3G, you also need to turn on "Enable 3G". But do this only if you can call a mobile flatrate your own, because downloading episodes over 3G can increase your mobile data usage.