# IP Keypad - Subnet Calculator — Subnet Calculator

> A subnet calculator for network address calculations. (iPhone/iPad app by Takahiro Furuya.)

- Source: https://appshunter.io/ios/app/ip-keypad-subnet-calculator/id504232308 (this page in markdown: same URL + `.md`)
- Developer: [Takahiro Furuya](https://appshunter.io/developer/503779747)
- Category: Productivity, Utilities
- Price: Free
- Rating: 4.74/5 from 141 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 5 MB
- Languages: English, Japanese
- Released: 2012-02-28
- Data updated: 2026-08-22
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/ip-keypad-subnet-calculator/id504232308/reviews.md

## What is IP Keypad?

This app is a subnet calculator.

-Dedicated keypad.
-Pickers for subnet mask and prefix length.
-Calculate addresses (network,host,directed broadcast). 
-Classfull and classless mode.


=== Please note === 
"Special-Purpose" in version 3.0.0 and later is shown based on the RFC 6890(April 2013).

"special use" in version 2.3.2 and before is shown based on the RFC 5735 (January 2010).

## Key features

- Dedicated keypad
- Subnet mask and prefix length pickers
- Network, host, and broadcast address calculation
- Classful and classless modes
- RFC 6890/5735 special-purpose address display

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/ip-keypad-subnet-calculator/id504232308/reviews.md

### 5/5 — Nice Real Nice

*2024-04-16, version 3.1*

Easy to use, fast, and this my first app that works smoothly.

### 5/5 — Wonderful

*2023-11-16, version 3.1*

Cool app

### 4/5 — Wildcard Mask

*2021-05-11, version 3.0.5*

I just discovered this app today and I have to say it’s really handy. Suggestions: adding a wildcard mask to the list will make it a 5 star review for me. Great app

### 4/5 — Good App Needs Some Additional Features

*2021-01-28, version 3.0.5*

Overall good but it should include a readout for number of subnets created. That’s important to know if you need to plan the number of network segments. Also a “would like to have” is to be able to switch the display to show the IP and subnet in binary so we can learn from it.

### 1/5 — No good for iPad.

*2020-04-14, version 3.0.5*

Lacking large screen support and landscape mode for iPad.

### 4/5 — Great app, with one small shortcoming

*2020-03-28, version 3.0.5*

That shortcoming? Giving us the opportunity to make an in-app purchase of a few dollars so as to disable those annoying ads! 

I’d gladly pay something so that I don’t have to see them. 

Thanks. 

😁

### 1/5 — ipad Support?

*2019-07-01, version 3.0.5*

No ipad support.  App does not seem to rotate with the screen.

### 4/5 — Quite good

*2013-02-10, version 2.3.1*

Shows a lot of useful information at a glance, easy to input and change data. Several similar apps by Takahiro let you choose how much info you need.

## Frequently asked questions about IP Keypad

### What is IP Keypad's primary function?

IP Keypad is a subnet calculator designed to help users compute network, host, and broadcast addresses. It offers dedicated pickers for subnet masks and prefix lengths, supporting both classful and classless modes for comprehensive IP address management.

### How does IP Keypad handle special-purpose IP addresses?

IP Keypad displays special-purpose IP addresses based on current RFC standards. For version 3.0.0 and later, it uses RFC 6890 (April 2013), and for versions 2.3.2 and earlier, it references RFC 5735 (January 2010).

### What devices is IP Keypad available on?

IP Keypad is currently supported on iPhone devices. The app is designed for iOS users who need quick access to subnet calculation tools on their mobile devices.

### How often is IP Keypad updated?

The latest version of IP Keypad is 3.1.2, last updated on February 26, 2026. This indicates a commitment to maintaining and improving the application with relevant features and compatibility.

### What is the user rating for IP Keypad?

IP Keypad has received an excellent user rating of 4.7 stars based on 140 ratings. This high score suggests that users find the app reliable and valuable for their networking needs.

### Is IP Keypad free to use?

Yes, IP Keypad is available for free. While the app itself is free to download and use, it does contain advertisements to support its development and maintenance.

### What age rating does IP Keypad have?

IP Keypad has an age rating of 4+. This means the app is suitable for users of all ages and does not contain any content that would be considered inappropriate for children.

### Can IP Keypad integrate with other networking tools?

While the description does not explicitly mention integrations with other networking tools, IP Keypad's core functionality as a subnet calculator allows for easy manual input of its results into other systems or reports.

## Version history (last 5 releases)

### 3.1.3 — 2026-04-11

Minor improvements

### 3.1.2 — 2026-02-26

Tracking is disabled, and personalized ads are unavailable. non‑personalized ads are served.

### 3.1.1 — 2026-02-01

Minor improvements

### 3.1 — 2022-06-13

Landscape orientation is now available. 
Dark appearance is now available. 
Added app-specific dark mode options.

### 3.0.5 — 2019-06-26

Update about in-app advertising

## Apps similar to IP Keypad

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PRTG - Monitoring](https://appshunter.io/ios/app/prtg-monitoring/id326306472) | 4.8 (1,950) | Free | Productivity |
| [IP Validator](https://appshunter.io/ios/app/ip-validator/id1155930646) | 5.0 (2) | Free | Productivity |
| [Network Utilities & Analyzer](https://appshunter.io/ios/app/network-utilities-and-analyzer/id1246455042) | 4.5 (457) | Free | Productivity |
| [Pulseway](https://appshunter.io/ios/app/pulseway/id405566169) | 4.6 (614) | Free | Productivity |
| [Ekahau Survey](https://appshunter.io/ios/app/ekahau-survey/id1238070997) | 2.7 (49) | Free | Productivity |
| [Cisco Product Verifier](https://appshunter.io/ios/app/cisco-product-verifier/id1540145857) | 3.7 (3) | Free | Productivity |

## More apps by Takahiro Furuya

- [IP Keypad Pro - Subnet Calc](https://appshunter.io/ios/app/ip-keypad-pro-subnet-calc/id503779744)
- [Subnet Mask Wheel](https://appshunter.io/ios/app/subnet-mask-wheel/id560947458)
- [Subnet Gauge](https://appshunter.io/ios/app/subnet-gauge/id567064150)
- [Subnet Mask](https://appshunter.io/ios/app/subnet-mask/id580727679)

All apps by Takahiro Furuya: https://appshunter.io/developer/503779747

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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 2026-08-22.*