Hauusian is free.
It can't be sold or hire for money or any other profit.

It can be used by humans, animals or any other creatures, 
(oprócz zapchlonych sierściuchów podwórkowych, kocia ich mać).

If you feel, that Hauusian was helpful in your work,
you can place acknowledgement (not obligatory) in your paper
to Fanyr Orkin from Kielce.