# IP Subnet Calc vs CIDR

The clearest difference is in-app purchases: IP Subnet Calc at none against CIDR's 1. IP Subnet Calc also leads on ratings volume (220 vs 1) and iOS requirement (9.0 vs 15.6). CIDR's advantage is update cadence (every 3 weeks vs every 15 months). On price, rating, ads and monetization model there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for IP Subnet Calc against 5.0 for CIDR. That said, the two scores are not equally well evidenced: IP Subnet Calc has 220 ratings behind it against 1, so its average is the more settled of the two.

IP Subnet Calc ships an update every 15 months, CIDR every 3 weeks. The most recent releases landed on September 26, 2026 and June 30, 2026 respectively.

## The numbers

| Metric | IP Subnet Calc | CIDR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (220 ratings)](https://appshunter.io/ios/app/ip-subnet-calc/id1282188941/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews)** |
| Number of ratings | **220** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 20 MB | 23 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Goncalo Silva](https://appshunter.io/developer/1281379202) | [ao-system, Inc.](https://appshunter.io/developer/1338624340) |

## What reviewers say

### IP Subnet Calc

[App page](https://appshunter.io/ios/app/ip-subnet-calc/id1282188941)

This tool calculates IPv4 and IPv6 subnets, providing detailed information such as the number of hosts, subnet size, class, and network addresses. Use the interactive CIDR slider to dynamically adjust subnet properties.

**Highlights:** IPv4 and IPv6 subnet calculation, Displays number of hosts, Shows subnet size and class, Provides network and broadcast addresses, Interactive CIDR slider

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 IP Subnet Calc free?

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

### Is CIDR free?

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

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

CIDR is rated higher. IP Subnet Calc averages 4.9 out of 5 from 220 ratings, while CIDR averages 5.0 from 1 ratings.

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

Neither IP Subnet Calc nor CIDR shows ads.

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

IP Subnet Calc ships an update every 15 months, and CIDR every 3 weeks. Most recently, IP Subnet Calc was updated on September 26, 2026 and CIDR on June 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*