Creating a great podcast player for iOS definitely seems like a worthwhile project! Please keep us updated on the progress, and feel free to keep a fruitful conversation going.
I’ll post this thread for reference:
A question is whether you really wish to build a feature identical iOS app, or rather use the good ideas and avoid remaking the same mistakes? As can be read in the linked thread, AntennaPod is quite android specific in it’s technology choices and any attempt at porting to another platform would practically be a rewrite. Unless reaching complete feature parity, users might find it unexpected to find two seemingly unrelated apps sharing the same name.