The Google Podcasts app has search like that on Android as well. I agree that it's amazing that there is such a dearth of usable podcast apps out there, especially on Android.
Looks like no, "The potential risks of misuse raise concerns regarding responsible open-sourcing of code and demos. At this time we have decided not to release code or a public demo. In future work we will explore a framework for responsible externalization that balances the value of external auditing with the risks of unrestricted open-access."