# Subnet Calculator + — Simple Subnet Calculations

> Intuitive network subnet calculator for IPv4 and IPv6 with advanced splitting features. (iPhone/iPad app by Steven Eppler.)

- Source: https://appshunter.io/ios/app/subnet-calculator-plus/id445990645 (this page in markdown: same URL + `.md`)
- Developer: [Steven Eppler](https://appshunter.io/developer/312274388)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.00/5 from 7 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.6 · 1 MB
- Languages: American English
- Released: 2011-06-29
- Data updated: 2026-06-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/subnet-calculator-plus/id445990645/reviews.md

## What is Subnet Calculator +?

SubnetCalc is a fast, intuitive subnet calculator for networking professionals and students.

Features:
- IPv4 subnet calculator with live CIDR slider (1-30)
- Subnet Splitter for equal-split and VLSM subdivision
- IPv6 calculator with prefix slider (1-128)
- Auto-detect your device's IP and subnet from Wi-Fi
- Navigate between adjacent subnets
- Share or copy results instantly
- Native Mac support via Mac Catalyst

Enter any IP address, adjust the CIDR prefix with the slider, and instantly see:
- Subnet mask
- Network address
- Broadcast address
- Usable host range
- Maximum hosts
- Wildcard mask

The Subnet Splitter lets you divide a network into equal subnets or use VLSM to allocate subnets by host count. Perfect for network planning and design.

No ads. No tracking. No subscription.

## Key features

- IPv4 subnet calculator with CIDR slider
- Subnet Splitter for VLSM
- IPv6 calculator with prefix slider
- Auto-detect device IP from Wi-Fi
- Navigate adjacent subnets
- Share or copy results
- Native Mac support

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Huge Tip | $9.99 | one-time |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |


## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/subnet-calculator-plus/id445990645/reviews.md

### 3/5 — So simple and useful

*2021-04-02*

But I have a problem —-> when I want to write an IP address, I can not use a dot notation because don’t use a point (it’s look like this 176,16,0,0 instead of 172.16.0.0)

Could you solve this please 🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼

### 1/5 — Broken

*2020-12-25*

It is showing numeric pad with , instead of . and as a result i cannot enter the address.

### 4/5 — Does the job

*2019-08-28*

A good simple subnet calculator, without ads. Thank you!

### 5/5 — Great

*2016-10-29, version 2.0*

Exactly what I was after ! Nice job

### 5/5 — Excellent app

*2016-04-13, version 2.0*

Very useful and simple app 5 star

### 5/5 — Best simple free subnet calc

*2016-02-16*

Simple and tight.
Has all the options you need.  
Can text or email your results.
ALSO does multicast subnets unlike several other free calculators I have tried.

### 5/5 — Clean, simple, nice layout

*2015-08-06*

I really like this.  I was looking for a good well designed tool. The >> tool to run through the subnets is nice, and the email button is great! Thanks

### 5/5 — Best subnet calculator in the AppStore

*2014-04-29, version 1.0*

Best subnet calculator in the AppStore

### 5/5 — Nice job

*2011-10-19*

This is a nice clean app! No fancy bling just straight to the point. The share and print features are a nice touch. In the next version, how about IPV6?

### 3/5 — Does the job, but no cigar!

*2011-08-14*

Does the job, but no cigar!

## Frequently asked questions about Subnet Calculator +

### What is Subnet Calculator + used for?

Subnet Calculator + is used for performing fast and intuitive subnet calculations for both IPv4 and IPv6 networks. It helps users determine subnet masks, network addresses, broadcast addresses, and usable host ranges.

### Does Subnet Calculator + have ads?

No, Subnet Calculator + is ad-free. The developer explicitly states 'No ads. No tracking. No subscription.' in the app description.

### What platforms is Subnet Calculator + available on?

Subnet Calculator + is available on Mac, iPhone, and iPad, leveraging Mac Catalyst for native Mac support.

### How does the Subnet Splitter feature work in Subnet Calculator +?

The Subnet Splitter allows you to divide a network into equal subnets or perform Variable Length Subnet Masking (VLSM) by allocating subnets based on host count, which is ideal for network planning.

### What is the update frequency of Subnet Calculator +?

The app was last updated on March 3, 2026, indicating recent development activity. It was originally released on June 29, 2011.

### What is the user rating for Subnet Calculator +?

Subnet Calculator + has a rating of 4.0 stars based on 7 user ratings, suggesting a generally positive user experience.

### Is Subnet Calculator + suitable for beginners?

Yes, the app is described as intuitive and is suitable for both networking professionals and students, indicating it's accessible for those learning about subnetting.

### Can Subnet Calculator + detect my current IP address?

Yes, Subnet Calculator + can auto-detect your device's IP address and subnet directly from your Wi-Fi connection, simplifying the process of analyzing your current network.

## Version history (last 4 releases)

### 4.0 — 2026-03-03

What's New in SubnetCalc 4.0:

- New IPv6 Calculator tab with full prefix support (1-128)
- New Subnet Splitter with equal-split and VLSM modes
- Tip Jar to support development
- Code modernization and bug fixes

### 3.0 — 2020-12-13

Rewritten in Swift and SwiftUI.  New dark mode support.  Fixed share sheet bug.

### 2.0 — 2015-05-05

This app has been updated by Apple to display the Apple Watch app icon.

iOS 8.3 fixes
Works on iPad and iPhone 6 and 6+ natively now as well.

### 1.0 — 2011-06-29

No release notes.

## Apps similar to Subnet Calculator +

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [easy Subnet Calculator](https://appshunter.io/ios/app/easy-subnet-calculator/id6468453755) | — | Free | Utilities |
| [IPv4 Subnet Calculator](https://appshunter.io/ios/app/ipv4-subnet-calculator/id6446788822) | 5.0 (3) | Free | Utilities |
| [CIDR Calc](https://appshunter.io/ios/app/cidr-calc/id1565667811) | 5.0 (1) | Free | Utilities |
| [Simple Subnet Calc](https://appshunter.io/ios/app/simple-subnet-calc/id665684290) | 5.0 (1) | Free | Utilities |
| [IPCalc - Calculate The Network](https://appshunter.io/ios/app/ipcalc-calculate-the-network/id1577092870) | 5.0 (1) | Free | Utilities |
| [About Subnet Mask](https://appshunter.io/ios/app/about-subnet-mask/id1662782439) | 5.0 (1) | Free | Utilities |

## More apps by Steven Eppler

- [MacLookup - MAC Address Search](https://appshunter.io/ios/app/maclookup-mac-address-search/id312274385)
- [Tiltometer](https://appshunter.io/ios/app/tiltometer/id425306235)
- [iScan - Scan Barcodes to Web](https://appshunter.io/ios/app/iscan-scan-barcodes-to-web/id443235962)

All apps by Steven Eppler: https://appshunter.io/developer/312274388

## Related topics

[steven eppler](https://appshunter.io/ios/topics/steven-eppler) · [subnet calculator alternative](https://appshunter.io/ios/topics/subnet-calculator-alternative) · [simple cidr](https://appshunter.io/ios/topics/simple-cidr) · [ipv4 subnet calculator](https://appshunter.io/ios/topics/ipv4-subnet-calculator)

---

*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 2026-06-07.*