Apple Podcast Analytics that came out in November of 2017 offer the most unique stats and a lot of podcasters were really excited when they finally were available. They only provide stats for iOS 11 users (and all future versions) but they provide great stats like how long people listen, at what part of your podcast do people exit out and some really good stats that can really help you understand the listening patterns of your audience as well as demographics. Apple Podcasts will not give you the full picture like Libsyn/Blubrry but if the majority of your listeners use iOS devices you can get some good insights and it’s available for all creators as long as yiu submitted to iTines directory.
Best to you,
Mike