It wasn't when I bought it and I was grandfathered into a perpetual subscription. I don't want it to be a monthly SaaS, I guess was my point. It does most of what I want it to do and that's fine.

AntennaPod is good but it really lacks in UX polish / defaults. I say go for gold and make your own personal apps. My personal podcast app won't do what your idea of a personal podcast app should do so you can make the app that you want with an LLM subscription.