I'm not sure why I'm struggling so hard to find an answer to this. But let's say you want fresh information on the app's front page with some regularity. Maybe you're having a sale, or a new blog post went up, or you are going to reward the next 20 customers who click through your mobile app to your website.
I'm not looking for a push notification ala a text message, but some dynamically updating content within the app. I have apps that seem able to do this, but I can't figure out how.