SubnetMaster: IP Calculator
Master IPv4 & IPv6 Subnetting
About
This app simplifies IP subnetting for IT professionals, network engineers, and students. It offers fast, accurate calculations for IPv4 and IPv6, including VLSM and FLSM, with options to export reports and practice subnetting skills.
What's New in SubnetMaster
1.3
April 11, 2026
Subscription plans
Monthly Premium
Unlock full access to the subnet calculator and tools.
In-App Purchases
$59.99
Lifetime Unlock
Permanent access to all premium features.
Developer apps
FAQ
What is SubnetMaster used for?
SubnetMaster is a utility app designed to simplify IP subnetting calculations for IPv4 and IPv6. It helps users quickly determine network details, perform VLSM/FLSM calculations, and practice subnetting skills.
Is SubnetMaster free to use?
SubnetMaster is free to download and use with its core features. An optional 'SubnetMaster Pro' upgrade is available for advanced features like unlimited exports and advanced IPv6 support.
What are the subscription options for SubnetMaster Pro?
SubnetMaster Pro offers flexible subscription plans including Monthly Premium for $4.99, Annual Premium for $29.99, and a one-time Lifetime unlock option. These unlock unlimited designs, exports, and advanced IPv6 features.
Can I export my subnet designs from SubnetMaster?
Yes, SubnetMaster allows you to generate professional PDF and CSV reports of your custom subnet designs. This feature is available in the free version, with unlimited exports unlocked in SubnetMaster Pro.
Does SubnetMaster support both IPv4 and IPv6?
Yes, SubnetMaster provides full support for both IPv4 and IPv6 addressing protocols, ensuring users can work with current and future network standards.
What kind of training does SubnetMaster offer?
SubnetMaster includes interactive training modes to help users sharpen their binary math and subnetting skills. These practice scenarios are designed to prepare users for certification exams like CCNA and CompTIA Network+.
What devices is SubnetMaster available on?
SubnetMaster is available on iPhone and iPad devices. It is rated for ages 4 and up.
How often is SubnetMaster updated?
SubnetMaster was last updated on April 11, 2026, with version 1.3. The app is developed by Anthony Rubino.