Indo bang?
i dont know what that means....
what do you mean by "it is totally libre (mit license)and GRATIS?" gratis is an indonesian word it means "free"
ok i see.
in the free and open software community there is considered two types of "free"
libre means free as in freedom (open source)
gratis means free as in free of cost
see https://en.wikipedia.org/wiki/Gratis_versus_libre