https://www.blinkist.com/en/app/daily
They do have a free summary (they call their summary a Blink) every day.
Blinkist is a book summaries service. I've been subscribed to it for a couple of years due to massive discounts. The app is horrendous and bug-filled. 15-20 minutes are usually not enough to give a book enough depth, and I would never get it at full price.
but...
Sometimes I like to listen to totally random books I would not usually spend the time on. Politics, feminism, sexuality, ghosts, spirits, conspiracies, and any topic really, from time to time is interesting to listen to something totally outside of our normal information diet.