Access Logs for PortalApps Applications

I am new to PortableApps. I would like to find out if there is any easier way of logging application usage for PortableApps.

## Senario
Let us say I have a USB drive with 10 portable applications; how would I go about logging timestamps when specific PortableApps were launched? I spent the last couple of hours poking around utility applications but non of them seem to be a perfect fit for what I want.

I would ideally want the access logs to be stored on USB drive.