When the metric application will exit. We are waiting for 6 months. 
You are asking in the wrong place. Likely we will not get a direct answer to this. It will be ready when its ready.
I thought the developers of Sambapos were doing it. Am I wrong?
Who knows.
Yes but samba Dev is no active on this forum now emre has gone quiet.
Metrik is being developed by Sambapos yes but this is the community not support forum or release forum. The developers typically do not read this forum.
They have not given a release date so I am sorry but we do not know.