Ask HN: Did you looking for growing/weak segments of users?

Hey-hey, I think to start new product and before doing this, of course, try to get some feedback from rockstars :)

So, my questions are:

1) Do you look for growing or weak users` segment? I mean, is it important to you know, for example, that Android users' in Brazil are growing or iPone folks start to fall?

2) You would likely pay for:

a) Find growing/falling users' segments b) Find what was the reason of growing/falling metrics? c) Build users journey due to AARRR framework (like Autopilot, but with acquisition inside) d) None above

Thank you and keep rocking!