Does Splunk have an app and/or add-on for Pulse Secure? I see that there's an app for Juniper.
There is now the Pulse Connect Secure Add-on for Splunk but has some minor issues based on my current experience with it. It looks like the author is actively working on it so maybe it'll get better.
It doesn't seem so. Found a similar question from 2013 with no answer ... at Adaptability with Junos Pulse Access Control Service (UAC)