# IPMask vs About Subnet Mask

The clearest difference is update cadence: About Subnet Mask at every 9 days against IPMask's every 5 months. About Subnet Mask also leads on iOS requirement (15.0 vs 17.0). IPMask's advantage is monetization model (free vs ad-supported). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for IPMask against 5.0 for About Subnet Mask. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

IPMask ships an update every 5 months, About Subnet Mask every 9 days. Both last shipped on October 15, 2026.

## The numbers

| Metric | IPMask | About Subnet Mask |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ipmask-subnet-calculator/id1031084465/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/about-subnet-mask/id1662782439/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 9 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleksei Neronov](https://appshunter.io/developer/551009381) | [Jaehwa Noh](https://appshunter.io/developer/1629220949) |

## What reviewers say

### IPMask

[App page](https://appshunter.io/ios/app/ipmask-subnet-calculator/id1031084465)

This utility helps calculate IP network addresses and subnetworks for IPv4. It assists in understanding IP addressing functions like host identification and location addressing within a network. The tool is useful for dividing networks into smaller subnetworks through subnetting.

**Highlights:** IP network address calculation, Subnetwork subdivision, Host identification, Location addressing, IPv4 support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### About Subnet Mask

[App page](https://appshunter.io/ios/app/about-subnet-mask/id1662782439)

This utility tool calculates subnet masks based on IP and subnet inputs. It supports both IP and CIDR formats, determines class-based network numbers, and saves previous calculations for easy access. Users can also check the class of any IP address.

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IPMask free?

IPMask is free to download, with no in-app purchases.

### Is About Subnet Mask free?

About Subnet Mask is free to download, with no in-app purchases.

### Which has better reviews, IPMask or About Subnet Mask?

IPMask and About Subnet Mask are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do IPMask or About Subnet Mask have ads?

Both IPMask and About Subnet Mask show ads.

### Which is updated more often, IPMask or About Subnet Mask?

IPMask ships an update every 5 months, and About Subnet Mask every 9 days. Most recently, IPMask was updated on October 15, 2026 and About Subnet Mask on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*