Subnetting Practice is a free Android application developed by ZerOnes that is designed to help users improve their CIDR and Subnetting calculation skills. The app offers two modules for practice: CIDR Practice and Subnetting Practice (VLSM). Additionally, there are two tutorial modules available: CIDR Tutorial and Subnetting Tutorial.

The app is user-friendly and easy to navigate, making it a great tool for those who want to sharpen their network calculation skills. It is the only application that provides subnetting answers explained in detail.

The Subnetting Practice app features a practice mode that allows users to practice their CIDR and Subnetting calculations. The app is a great tool for those who are studying for network certification exams or who want to improve their network calculation skills.

Overall, Subnetting Practice is a useful tool for anyone looking to improve their CIDR and Subnetting calculation skills. For those who want even more features, the app also offers a full version called IP Calculator.