Oh? I've had trouble with Overcast. It often exits when I launch it, usually this happens after I haven't used the app for a few days. The app works when I launch it a second time. When it works, it takes a long time, e.g., a full minute before the app is ready to accept input and start a podcast. I haven't taken the time to look at it closely or request support. There's plenty of storage available, so it's not a "disc full" error in disguise. I've gone back to the Apple iOS app.
My use case is a few regular podcasts, and many (~100) podcasts where I listen to only one episode. I like to keep the infrequently accessed podcasts around so I can remember what I listened to, and in case there's another episode I want.
Also it doesn't sync with iCloud, but maybe that's been added?