IP Calculator is an Android application designed for CCNA, CCNP, Networking professionals, and students. It is an all-in-one IP calculator that covers IPv4 and IPv6 modules with CIDR and VLSM subnetting tutorials and practice modules. This application also has a command reference with over 10,000 Cisco IOS commands.

The IP Calculator app features a CIDR calculator, IPv4 and IPv6 calculator, subnet calculator/VLSM calculator, and a CIDR/VLSM practice module. The app lets you get complete network configuration with assignable IP range, subnet mask, network address, and broadcast address for each subnet. The subnet calculator uses VLSM algorithm.

The CIDR/VLSM practice module allows users to test their answers and learn subnetting. Additionally, the CIDR/VLSM tutorial provides a well-explained tutorial with practical examples, making subnetting easy and quick to learn.