Unreplied Thread Counter (Moderator Bar)



So I've got an application system on my forum, where the result gets posted in a new thread in a specific forum node.

However I've been trying to find a possibility to count the unreplied threads in that node and show it just like the "Reported Posts" counter in the moderator bar.

I do not have the know-how or experience to do this, sadly enough.
It would be wonderful if somebody could tell me how this can be done!

Is this is possible, could this also be done where it checks for a specific thread prefix, rather than reply count?

Kind Regards,