# Subnet Plus vs CIDR

The clearest difference is ads: CIDR at none against Subnet Plus's shown. CIDR also leads on rating (5.0 vs 4.6) and iOS requirement (15.6 vs 26.0). Subnet Plus's advantage is ratings volume (54 vs 1). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Subnet Plus sells 1 one-off in-app purchase and CIDR sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CIDR 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, CIDR every 3 weeks. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Subnet Plus | CIDR |
| --- | --- | --- |
| 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/cidr/id1564239813/reviews)** |
| Number of ratings | **54** | 1 |
| Positive reviews | 89.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 12 MB | 23 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ted Trentler](https://appshunter.io/developer/380264826) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## 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

[App page](https://appshunter.io/ios/app/cidr/id1564239813)

This utility calculates IP address ranges from an IP address and subnet mask. It supports IPv4 calculations, including prefix display, address range counts, and bit notation. Useful for quick CIDR notation checks and subnet mask conversions.

**Highlights:** IP address range calculation, Subnet mask to CIDR conversion, IPv4 prefix display, Number of address ranges, Bit notation display, Quick reference table

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Subnet Plus free?

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

### Is CIDR free?

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

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

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

### Do Subnet Plus or CIDR have ads?

Subnet Plus shows ads; CIDR does not.

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

Subnet Plus ships an update every 2 weeks, and CIDR every 3 weeks. Most recently, Subnet Plus was updated on October 12, 2026 and CIDR on October 2, 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.*