# Subnetting Calculator vs About Subnet Mask

The clearest difference is rating: About Subnet Mask at 5.0 against Subnetting Calculator's 3.8. About Subnet Mask also leads on update cadence (every 9 days vs every 26 months). Subnetting Calculator's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases and device support there is nothing between them.

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

About Subnet Mask holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Subnetting Calculator ships an update every 26 months, About Subnet Mask every 9 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Subnetting Calculator | About Subnet Mask |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/subnetting-calculator/id729985998/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/about-subnet-mask/id1662782439/reviews)** |
| Number of ratings | **4** | 1 |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 26 months | **Every 9 days** |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 9 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rooster Glue, Inc.](https://appshunter.io/developer/729986001) | [Jaehwa Noh](https://appshunter.io/developer/1629220949) |

## What reviewers say

### Subnetting Calculator

[App page](https://appshunter.io/ios/app/subnetting-calculator/id729985998)

This utility calculates IPv4 IP address ranges, host counts, broadcast addresses, and subnet masks. It supports both traditional classful and classless (CIDR) subnet mask calculations for network administrators.

**Highlights:** IPv4 IP address range calculation, Host number calculation, Broadcast address calculation, Subnet mask calculation, Classful subnetting (A, B, C), Classless Inter-Domain Routing (CIDR)

**Features:** macOS Compatibility

**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 Subnetting Calculator free?

Subnetting Calculator 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, Subnetting Calculator or About Subnet Mask?

About Subnet Mask is rated higher. Subnetting Calculator averages 3.8 out of 5 from 4 ratings, while About Subnet Mask averages 5.0 from 1 ratings.

### Do Subnetting Calculator or About Subnet Mask have ads?

About Subnet Mask shows ads; Subnetting Calculator does not.

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

Subnetting Calculator ships an update every 26 months, and About Subnet Mask every 9 days. Most recently, Subnetting Calculator was updated on October 24, 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.*