# Subnet Plus vs About Subnet Mask

The clearest difference is in-app purchases: About Subnet Mask at none against Subnet Plus's 1. About Subnet Mask also leads on rating (5.0 vs 4.6) and iOS requirement (15.0 vs 26.0). Subnet Plus's advantage is ratings volume (54 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Subnet Plus sells 1 one-off in-app purchase. About Subnet Mask asks for nothing beyond the download.

About Subnet Mask holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Subnet Plus has 54 ratings behind it against 1, so its average is the more settled of the two.

Subnet Plus ships an update every 2 weeks, About Subnet Mask every 9 days. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Subnet Plus | About Subnet Mask |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (54 ratings)](https://appshunter.io/ios/app/subnet-plus-subnet-calculator/id724663668/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/about-subnet-mask/id1662782439/reviews)** |
| Number of ratings | **54** | 1 |
| Positive reviews | 89.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | **Free** | Ad-supported |
| Size | 12 MB | 9 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ted Trentler](https://appshunter.io/developer/380264826) | [Jaehwa Noh](https://appshunter.io/developer/1629220949) |

## What reviewers say

### Subnet Plus

[App page](https://appshunter.io/ios/app/subnet-plus-subnet-calculator/id724663668)

Calculate IP subnets with ease on your iPhone or iPad. This tool helps visualize binary and hex information for subnets, aiding in network studies and professional calculations. Save your calculated networks for future reference.

**Highlights:** Subnet calculation, Save calculated networks, Binary and hex display, Network address ranges, Broadcast IP addresses, Study aid for networking exams

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $4.99 | one-time |

**What reviewers like**

- 👍 Convenient and simple interface
- 👍 Practical and useful tool
- 👍 Saves locations and provides needed information
- 👍 Smart layout
- 👍 Great use of sliding octets for real-time effects

**What reviewers complain about**

- 🐛 Interface needs work
- 🐛 Text in subnet netmask field too large
- 🐛 Last octet not visible
- 🐛 No apparent way to enlarge field or change text
- 🐛 No landscape mode for iPad Pro

**Reported bugs**

- Text in subnet netmask field too large, last octet not visible
- Values truncated, cannot view full values
- Subnet mask and IP addresses truncated
- Cannot read all data
- Numbers truncated on iPhone 5s

**Requested features**

- Export option to share saved subnets
- Pay to remove ads
- Landscape mode for iPad Pro
- Update for visualising or adjusting screen on iOS 9
- Ability to type netmask


### 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 Subnet Plus free?

Subnet Plus is free to download, with in-app purchases available.

### Is About Subnet Mask free?

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

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

About Subnet Mask is rated higher. Subnet Plus averages 4.6 out of 5 from 54 ratings, while About Subnet Mask averages 5.0 from 1 ratings.

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

Both Subnet Plus and About Subnet Mask show ads.

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

Subnet Plus ships an update every 2 weeks, and About Subnet Mask every 9 days. Most recently, Subnet Plus was updated on September 20, 2026 and About Subnet Mask on September 10, 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.*