The iOS Podcast app in iOS 12.2 is really rather good - 3D Touch to mark an episode as played is so intuitive, the app seems to work remarkably well, syncing works reliably between devices (iCloud sync perhaps now?) and the animations are really smooth too. Surprisingly I’m using it more than Overcast or Castro, which is an interesting twist of fate. All it needs is dark mode and I’m all in (which im assuming will come in iOS 13).