IP Keypad - Subnet Calculator

IP Keypad - Subnet Calculator

Subnet Calculator

145 ratings
9 reviews
Free
With Ads

Details

Released
February 28, 2012
Updated
April 11, 2026
IP Keypad - Subnet Calculator video #1 for iPhone
IP Keypad - Subnet Calculator screenshot #2 for iPhone
IP Keypad - Subnet Calculator screenshot #3 for iPhone
IP Keypad - Subnet Calculator screenshot #4 for iPhone
IP Keypad - Subnet Calculator screenshot #5 for iPhone
IP Keypad - Subnet Calculator screenshot #6 for iPhone
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About

Calculate network, host, and broadcast addresses with a dedicated keypad. Supports classful and classless modes, with pickers for subnet mask and prefix length. Includes special-purpose address information based on RFC standards.

✓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
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What's New in IP Keypad

3.1.3

April 11, 2026

Minor improvements

User reviews

Nice Real Nice

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

Wonderful

Cool app

Wildcard Mask

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

Response from developer

Thank you for your review. I am very happy that I got a good review from you. My the other app ‘Subnet Mask’ may be helpful if you would like to know a wildcard mask from a prefix length. As regards adding a wildcard mask to ‘IP Keypad - Subnet Calculator’, I think I have to consider carefully. A addresses represented by a wildcard mask may contain multiple subnetworks (or multiple networks). On the other hand, this app shows information assuming a single subnetwork (or a single network). For instance, this app shows Number of host addresses, but the value is incorrect if addresses represented by a address and a mask entered in this app contains multiple subnetworks (or multiple networks). This is because network addresses and directed broadcast addresses of each subnetwork (or each network) need to be excluded from number of host addresses. I am worried that it might cause confusion when this app shows a wildcard mask because this app only assume a single subnetwork (or a single network). I would like to work for this issue if l found good idea to solve this.

Good App Needs Some Additional Features

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.

Response from developer

Thank you for your review. My other apps may be helpful for you. ‘Subnet gauge’ has ability to show number of subnets and ‘IP Keypad Pro - Subnet Calc’ has ability to show addresses in binary. I think it may be better if single app has both ability, so I intend to consider whether to be able to add the ability of ‘Subnet gauge’ to ‘IP Keypad Pro - Subnet Calc’.

No good for iPad.

Lacking large screen support and landscape mode for iPad.

Response from developer

I am sorry for inconvenience. I am currently working on rewriting screen control code. It may be possible to enable landscape mode in relation to the new code. In fact, I can not spend much time for it at present, but I am going to spend for it as much time as possible.

Developer apps

FAQ

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.