I picked up the app as something to try while I was walking and found myself hooked on the story. The authors have done a good job making the story interesting, and having a cast of people and sound effects makes the story more interesting than one person reading a book. Its like listening to a movie.
My kids have even started walking with me and enjoy the story line. Note that my youngest were 13 when they heard a few missions. There have been a few swear words. No f bombs. There have also been some suspenseful situations. I dont know the age recommendations, but I personally wouldnt let young kids listen to it.
Something else I like is that it plays well with other apps. I use Zombies, Run! while listening to music, and it will automatically turn the music down when the story returns. This can also be adjusted so that the music gets turned down even more depending on preference.
I like that there are levels of subscriptions including free access. If you know youre only going to use the app during the summer, then just get a shorter subscription. If you can go out year round, buy a year pass.
Dm4js about ZRX: Zombies Run + Marvel Move, v5.1.1