Overcast’s best feature is its slick, minimalist design. [...] other features, like the recommendations for new shows to check out, are an improvement over Apple’s stock podcast app, too. Podcast junkies will also appreciate the premium version, which includes the ability to download episodes over a cellular connection, make longer playlists and use a sleep timer for dozing off to those dulcet NPR voices. Note: A limited version is free for iOS devices.