Hey everyone,
Me again with a small idea.
I couldn’t find anything about this in the forum. It’s about the TOD (Top of Descent).
In the flight planner it’s possible to enter the planned altitudes.
That way the app knows where you theoretically want to be at a waypoint (traffic pattern altitude or desired altitude, e.g. because of the CTR).
If you then feed the system the desired descent rate, you should be able to display a point for the TOD on the map, right? 
Cheers, Daniel