This application helps you to calculate the network subneting like VLSM and CIDR in IPv4 and IPv6 , it also allows you to convert the ip address into binary IP , hexadicimal IP and dicimal IP , it's very useful application even for the one who want to learn network and subneting because it contains videos tutorial to teach you how to calculate the network subneting in VLSM and CIDR subneting , these videos provided in three language Arabic , French and English .
https://play.google.com/store/apps/details?id=com.tofaha.vlsmtofaha