Couldn't find an iOS client that supported gpodder or Nexcloud (NextPod), so I built one. While it's flutter/dart built the focus of development is iOS and ecosystem features eg WatchOS support, CarPlay, AirPlay streaming, etc. You can download it from the Apple App store (iOS/iPadOS/macOS) for a few bucks (TestFlight is also available) or compile yourself from repo (tested on iOS & Linux, should work elsewhere too).

Adding podcast search next and thinking about adding standalone account support (keeping podcast data local and not requiring gpodder sync).

What features is it missing? What do you want to see from your perfect podcast app? What do you wish your current podcast app didn't do?

https://asecretcompany.com/yourpods/ has more market-y details.