IP Subnetting Practice is an Android networking tool that is designed for networking students, network administrators, and network IT engineers who are working towards their certifications such as CCNA, CCDA, CCNP, CCIE, etc. This app generates an IPv4 address along with the subnet mask as a question, and users can enter their answers for the network address, broadcast address, first host, and last host in the respective fields. The app also offers a "Check" button to verify individual answers and a "Help" button to provide the correct answer for cross-checking.

The app has several advantages, including no additional special permissions, no internet connection required, no ads, and a symbolic price. Furthermore, it is available in English and Spanish languages. IP Subnetting Practice is the number one best-selling app in many Google Play countries.