PAT74

Hi, I'm looking for a parental control app for my children android phone. I have questions about this product to be sure it fit my needs: 1 the device has 4g disabled and data only with wifi at home, is the product working well with no permanent data plan ? 2 is it possible to set some applications allowed to run even if the usage time limit is exceeded ? (parents emergency calls, clock, calculator,...) thank you. Regards.