Here's how it works.
Get the app from Google Play Store. Search for FamilySearch Tree and be sure it says FamilySearch International. Tap and download it. It's free. Launch it and sign in to your FamilySearch or LDS account. The app downloads 6 generations of your ancestors from FamilySearch Family Tree, if you have information there. If not, you can use Quick Start to get your ancestors into the app and start building your tree.
Well, using the app in general is not the purpose of this post. So, on to the Descendants with Tasks list.
From your pedigree view, tap one of your ancestors 3-6 generations away from you. The Details screen shows. Tap the three dots icon in the dark bar that has the ancestor name.
This is much like the Ancestors with Record Hints list, but focused on the descendants of a specific ancestor. It shows you cousins as well as direct line people who have hints or need temple work. In other words, you'll see some duplication between the two lists.
Give it a try. I'm guessing that similar features are available for the app for iOS devices. But my phone and tablet are Android, so that's what I'm familiar with.