# Subnet Plus vs CIDR Calc

The clearest difference is in-app purchases: CIDR Calc at none against Subnet Plus's 1. CIDR Calc also leads on ads (none vs shown) and rating (5.0 vs 4.7). Subnet Plus's advantage is update cadence (monthly vs every 19 months) and ratings volume (57 vs 1). On price, monetization model and device support there is nothing between them.

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

CIDR Calc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Subnet Plus has 57 ratings behind it against 1, so its average is the more settled of the two.

Subnet Plus ships an update monthly, CIDR Calc every 19 months. The most recent releases landed on November 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Subnet Plus | CIDR Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (57 ratings)](https://appshunter.io/ios/app/subnet-plus-subnet-calculator/id724663668/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr-calc/id1565667811/reviews)** |
| Number of ratings | **57** | 1 |
| Positive reviews | 89.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 19 months |
| Monetization | Free | Free |
| Size | 18 MB | 1 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Ted Trentler](https://appshunter.io/developer/380264826) | [Paul Smicker](https://appshunter.io/developer/1565667813) |

## 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


### CIDR Calc

[App page](https://appshunter.io/ios/app/cidr-calc/id1565667811)

Calculate subnet details, including IP addresses, masks, and reverse masks, using CIDR notation. Generate and share lists of subnets and hosts within the next higher octet. This tool simplifies network calculations for IT professionals and students.

**Highlights:** Subnet calculation, IP address display, Mask and reverse mask, Shareable subnet lists, Host calculation

**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 CIDR Calc free?

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

### Which has better reviews, Subnet Plus or CIDR Calc?

CIDR Calc is rated higher. Subnet Plus averages 4.7 out of 5 from 57 ratings, while CIDR Calc averages 5.0 from 1 ratings.

### Do Subnet Plus or CIDR Calc have ads?

Subnet Plus shows ads; CIDR Calc does not.

### Which is updated more often, Subnet Plus or CIDR Calc?

Subnet Plus ships an update monthly, and CIDR Calc every 19 months. Most recently, Subnet Plus was updated on November 1, 2026 and CIDR Calc on October 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.*