# Subnet Calculator + vs CIDR Calc

The clearest difference is rating: CIDR Calc at 5.0 against Subnet Calculator +'s 4.0. CIDR Calc also leads on in-app purchases (none vs 4) and update cadence (every 19 months vs every 64 months). Subnet Calculator +'s advantage is ratings volume (7 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Subnet Calculator + sells 4 one-off in-app purchases. CIDR Calc asks for nothing beyond the download.

CIDR Calc holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Subnet Calculator + has 7 ratings behind it against 1, so its average is the more settled of the two.

Subnet Calculator + ships an update every 64 months, CIDR Calc every 19 months. The most recent releases landed on June 7, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Subnet Calculator + | CIDR Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (7 ratings)](https://appshunter.io/ios/app/subnet-calculator-plus/id445990645/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr-calc/id1565667811/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 64 months | **Every 19 months** |
| Monetization | Free | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Steven Eppler](https://appshunter.io/developer/312274388) | [Paul Smicker](https://appshunter.io/developer/1565667813) |

## What reviewers say

### Subnet Calculator +

[App page](https://appshunter.io/ios/app/subnet-calculator-plus/id445990645)

This utility app simplifies network calculations for professionals and students. It offers tools for IPv4 and IPv6 subnetting, including live CIDR sliders and subnet splitting. Results can be easily shared or copied.

**Highlights:** 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

**In-app purchases (4)**

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


### 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 Calculator + free?

Subnet Calculator + 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 Calculator + or CIDR Calc?

CIDR Calc is rated higher. Subnet Calculator + averages 4.0 out of 5 from 7 ratings, while CIDR Calc averages 5.0 from 1 ratings.

### Do Subnet Calculator + or CIDR Calc have ads?

Neither Subnet Calculator + nor CIDR Calc shows ads.

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

Subnet Calculator + ships an update every 64 months, and CIDR Calc every 19 months. Most recently, Subnet Calculator + was updated on June 7, 2026 and CIDR Calc on September 8, 2026.

---

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