This is a pretty cool app designed for people who have a bunch of Installer sources and hate having to wait for the sources to refresh every time the Installer is opened. You can choose from different intervals ranging from 1 hour to 24 hours. You can choose to set the last refresh date for today or yesterday. It’s your choice.

To Install:

1. Fire up the Installer.app
2. Make sure you have the Community Sources installed
3. Scroll down to the Utilities category
4. Install Instafresh

- source: mxweas.com