# About Subnet Mask — Subnet mask Calculator.

> Calculates subnet masks, network numbers, and IP classes. (iPhone/iPad app by Jaehwa Noh.)

- Source: https://appshunter.io/ios/app/about-subnet-mask/id1662782439 (this page in markdown: same URL + `.md`)
- Developer: [Jaehwa Noh](https://appshunter.io/developer/1629220949)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 9 MB
- Languages: Afrikaans, Albanian, Amharic, Arabic, Armenian, Azerbaijani, Basque, Bangla, Bosnian, Bulgarian and 55 more
- Released: 2023-01-04
- Data updated: 2026-06-12
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/about-subnet-mask/id1662782439/reviews.md

## What is About Subnet Mask?

I believe.
My App makes your life more valuable.
You will be the greatest better than ever and shine with me.


This is a Subnet Calculator.

Enter your IP and Subnet.
That is all!
Subnet mask could write IP format or CIDR format.
It also calculates the class-based network number.

The search was saved at history and click to lead result.
You can check the class of IP.

Thank you. :)


If there are any incorrect translations, please contact us by email at starlightlab14@gmail.com

## Key features

- Subnet mask calculation
- IP and CIDR format support
- Class-based network number calculation
- IP class checking
- Search history


## Frequently asked questions about About Subnet Mask

### What is About Subnet Mask used for?

About Subnet Mask is a utility tool designed to calculate subnet masks, determine class-based network numbers, and check the class of IP addresses. It simplifies network calculations for users.

### Does About Subnet Mask support different input formats?

Yes, About Subnet Mask supports both IP address format and CIDR format for subnet mask calculations. This flexibility caters to various user preferences and network configurations.

### Can I review past calculations in About Subnet Mask?

Yes, About Subnet Mask saves your previous calculations in a history section. You can easily click on a past result to view it again, making it convenient for tracking and reference.

### What devices is About Subnet Mask compatible with?

About Subnet Mask is compatible with iPhone, iPad, and iPod devices. It is designed for use on the iOS platform.

### How often is About Subnet Mask updated?

The latest version of About Subnet Mask was released on October 30, 2023. Updates typically include bug fixes and performance improvements to ensure a reliable user experience.

### Does About Subnet Mask have ads?

Yes, About Subnet Mask contains advertisements. Users may see ads while using the application.

### What is the age rating for About Subnet Mask?

About Subnet Mask has an age rating of 4+. This indicates that the content is generally suitable for all ages.

### Is About Subnet Mask free to use?

Yes, About Subnet Mask is available for free. However, it does include advertisements.

## Version history (last 5 releases)

### 4.1.1 — 2023-10-30

Bug fixes and performance improvements ＼(^0^)/

### 4.0.1 — 2023-10-23

Bug fixes and performance improvements ＼(^0^)/

### 4.0.0 — 2023-10-19

Bug fixes and performance improvements ＼(^0^)/

### 3.1.1 — 2023-09-26

Bug fixes and performance improvements ＼(^0^)/

### 3.1.0 — 2023-08-21

Bug fixes and performance improvements ＼(^0^)/

## Apps similar to About Subnet Mask

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Simple Subnet Calc](https://appshunter.io/ios/app/simple-subnet-calc/id665684290) | 5.0 (1) | Free | Utilities |
| [SJ IPv4 Calculator](https://appshunter.io/ios/app/sj-ipv4-calculator/id6503641575) | — | Free | Utilities |
| [CIDR](https://appshunter.io/ios/app/cidr/id1564239813) | 5.0 (1) | Free | Utilities |
| [IPv4 Subnet Calculator](https://appshunter.io/ios/app/ipv4-subnet-calculator/id6446788822) | 5.0 (3) | Free | Utilities |
| [IP Subnet Calculator - IPv4/v6](https://appshunter.io/ios/app/ip-subnet-calculator-ipv4v6/id6479329030) | — | Free | Utilities |
| [easy Subnet Calculator](https://appshunter.io/ios/app/easy-subnet-calculator/id6468453755) | — | Free | Utilities |

## More apps by Jaehwa Noh

- [Do You Know RGB](https://appshunter.io/ios/app/do-you-know-rgb/id1629220947)
- [Nation and Flag](https://appshunter.io/ios/app/nation-and-flag/id1644498021)
- [Hand Counter](https://appshunter.io/ios/app/hand-counter/id6464596398)

All apps by Jaehwa Noh: https://appshunter.io/developer/1629220949

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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 2026-06-12.*