Castro on iOS. It uses an inbox triage model that lets me subscribe to a lot of podcasts and keep up with what they’re doing, without cluttering my queue or inducing decision fatigue. It has more granular (per-podcast) controls for smart speed, silence skipping, voice leveling, skipping intros and automatic triage than Spotify. It also lets me upload custom audio and subscribe to custom/private feeds. Support for scripting listening and feed management with iOS shortcuts is above a useful threshold.

Prior to Castro, I used Overcast and Pocket Casts, which have similar features.

I’m sure Spotify is the future but these third party clients are great for heavy listeners who want more control.