I built this briefing service. What's a brief? Well it's like a mini-podcast if it was just about what you care about. Oh a new app? Who cares am I right. But it's not an app.
It's a service you use over SMS for cheap (because running a mac mini for this is out of my budget or the $100 a month.)
The results though arrive in your podcasts app. Since RSS is a widely accepted open-source standard, it can work on all your podcasts apps if it can accept a personalized URL.
Which Apple Podcasts can do and it's quite easy. Not verified on other apps (would appreciate testing into this!!)
Feel free to tear the concept to shreds on viability.