Castro 2 review: Podcast app for iOS keeps episode volumes down to a dull roar

Competition spurs innovation, and the world of podcast apps for iOS has shown that in effect. Castro 2 ($5 in the iTunes Store) from Supertop diverges from other podcast apps, addressing the issue of managing a flood of podcast episodes and sharing episodes among other people.
The app requires a new way of thinking about podcast listening, and I wasn’t quite sure how to use it at first. That’s a one-time learning barrier, although Castro 2 could provide more handholding. While it of