# SubnetMaster: IP Calculator — Master IPv4 & IPv6 Subnetting

> IP subnetting calculator for IPv4 and IPv6 with training modes. (iPhone/iPad app by Anthony Rubino.)

- Source: https://appshunter.io/ios/app/subnetmaster-ip-calculator/id6761733401 (this page in markdown: same URL + `.md`)
- Developer: [Anthony Rubino](https://appshunter.io/developer/1891155024)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 40 MB
- Languages: American English
- Released: 2026-04-11
- Data updated: 2026-06-26
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/subnetmaster-ip-calculator/id6761733401/reviews.md

## What is SubnetMaster?

SubnetMaster is the definitive toolkit for IT professionals, network engineers, and students preparing for their CCNA, CompTIA Network+, or university exams. Say goodbye to manual binary math and tedious scratchpad calculations!

Whether you are architecting a complex enterprise network or just learning the basics of IP addressing, SubnetMaster provides lightning-fast, error-free results right in your pocket.

KEY FEATURES:
• Advanced VLSM & FLSM Calculators: Instantly break down networks with Variable Length Subnet Masking or standard Classful subnetting.
• Comprehensive Network Details: View your Network ID, Broadcast Address, Usable Host Ranges, and CIDR notation at a glance.
• Export & Share Reports: Generate professional PDF and CSV reports of your custom subnet designs to share with your team or attach to your IT documentation.
• Interactive Training Modes: Sharpen your binary math and subnetting skills with practice scenarios designed to help you ace your certification exams.
• IPv4 & IPv6 Support: Future-proof your workflow with full support for both addressing protocols.

SUBNETMASTER PRO:
Upgrade to SubnetMaster Pro to unlock the ultimate networking experience! Premium users get unlimited VLSM/FLSM designs, unlimited PDF/CSV exports, advanced IPv6 features, and priority support. Choose from flexible Monthly, Annual, or one-time Lifetime unlock options.

Stop guessing and start designing. Download SubnetMaster today and make IP subnetting the easiest part of your job!






Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- VLSM & FLSM Calculators
- Network ID, Broadcast, Host Ranges
- CIDR Notation
- PDF & CSV Report Export
- Interactive Training Modes
- IPv4 & IPv6 Support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Annual Premium | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Unlock | $59.99 | one-time |



## Frequently asked questions about SubnetMaster

### 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.

## Version history (last 1 release)

### 1.3 — 2026-04-11

No release notes.

## More apps by Anthony Rubino

- [Cannoli Shell: IT Pro Tools](https://appshunter.io/ios/app/cannoli-shell-it-pro-tools/id6765481285)

All apps by Anthony Rubino: https://appshunter.io/developer/1891155024

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*