# IP Mask Calculator

> Network engineer's tool for IP subnet mask calculation and verification. (iPhone/iPad app by Jerry Gong Li.)

- Source: https://appshunter.io/ios/app/ip-mask-calculator/id523574612 (this page in markdown: same URL + `.md`)
- Developer: [Jerry Gong Li](https://appshunter.io/developer/523574615)
- Category: Utilities, Productivity
- Price: $0.99
- Rating: 4.20/5 from 5 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: English
- Released: 2012-05-10
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ip-mask-calculator/id523574612/reviews.md

## What is IP Mask Calculator?

* "Simply Elegant" -SMC
* "Nicelly done, that's exactly what I need.  I use it for my CCNA preparation" -Jason Ming


This IP Subnet Mask Calculator is designed for Network Engineer that need to calculate or verify the ip mask, hosts range, broadcast ip, etc. 

Handles truly like a calculator with keys and display in a single view, all the values updates in real time as you increase or decrease the mask bit. 

AN EASY, SIMPLE, MUST HAVE APP FOR IT PROFESSIONALS !!


Features:

- Easy edit with custom keyboard
- Entry validation with sound feedback
- Class A,B,C,Reserved
- Display realtime IP mask, first last host, network IP and broadcast IP
- Subnetting and Supernetting
- Decimal, Binary and Hexadecimal
- Results are formatted and ready to be emailed for report or printing 

BONUS:  

- Fetch IP address registration information from IANA.org database using whois protocol.

## Key features

- Real-time IP mask calculation
- Host range and broadcast IP display
- Subnetting and Supernetting support
- Decimal, Binary, and Hexadecimal views
- Custom keyboard for easy editing
- Emailable report formatting
- IP address registration lookup

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/ip-mask-calculator/id523574612/reviews.md

### 1/5 — Terrible

*2015-02-11*

This app is terrible.  It only allows you to enter the IP and that is only when the app responds to the keyboard, which is sporadic.  You can not modify the CIDR prefix at all.

### 5/5 — Easy to use with + -

*2014-08-23*

Just use + and - to adjust mask bits is nice and easy

### 5/5 — Nice calculator with many features

*2014-08-17*

Simply like it, two thumbs up!

### 5/5 — Easy to use

*2014-07-28, version 1.6*

Goooooood stuff

### 5/5 — Superb!

*2014-07-27*

Very good calculator, I'm delighted!:)

### 5/5 — Calculator

*2014-07-27, version 1.6*

Best calculator ! Couldn't have asked for a better one. Great mechanics and fluent design !!!

### 5/5 — Simply the best

*2013-12-15*

This IP Mask Calculator is really easy to use and fast.  Its worth every penny.

## Frequently asked questions about IP Mask Calculator

### What is IP Mask Calculator used for?

IP Mask Calculator is used by network engineers to quickly calculate and verify IP subnet masks, host ranges, network IPs, and broadcast IPs. It provides real-time updates as you adjust the mask bit.

### How does IP Mask Calculator update values?

Values update in real-time as you increase or decrease the mask bit, offering an interactive and immediate experience similar to a physical calculator.

### Can I share my calculations from IP Mask Calculator?

Yes, the results are formatted and ready to be emailed for reports or printing, making it easy to share your subnetting information.

### What IP address information can IP Mask Calculator fetch?

As a bonus feature, it can fetch IP address registration information from the IANA.org database using the whois protocol.

### What devices does IP Mask Calculator support?

IP Mask Calculator is supported on iPhone and iPad devices.

### How much does IP Mask Calculator cost?

IP Mask Calculator is a paid app, available for $0.99.

### How often is IP Mask Calculator updated?

The app was last updated on December 12, 2024, with version 1.8, indicating active development and maintenance.

### Does IP Mask Calculator have ads?

No, IP Mask Calculator does not contain advertisements.

## Version history (last 5 releases)

### 1.9 — 2026-04-28

- look refresh
- add support for tab swipe
- add support for new iOS

### 1.8 — 2024-12-12

- Bug Fix
- add support for new iOS

### 1.7 — 2017-10-26

This app has been updated by Apple to display the Apple Watch app icon.

- IOS 11 support

### 1.6 — 2013-12-13

- iOS 7 support
- iPad support

### 1.5 — 2013-06-20

- Added NEW email feature: you can email calculated results for your report or printing. 
- Added support for 31 bits mask ip address.

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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 2026-06-10.*