# CIDR vs CIDR Tool

The clearest difference is price: CIDR at Free against CIDR Tool's $0.99. CIDR also leads on iOS requirement (15.6 vs 17.5). CIDR Tool's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

CIDR is free to download; CIDR Tool costs $0.99 up front. CIDR sells 1 one-off in-app purchase. CIDR Tool asks for nothing beyond the download.

## The numbers

| Metric | CIDR | CIDR Tool |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 23 MB | 1 MB |
| Requires iOS | **15.6** | 17.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [ao-system, Inc.](https://appshunter.io/developer/1338624340) | [Amatino](https://appshunter.io/developer/1664965510) |

## What reviewers say

### 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 |


### CIDR Tool

[App page](https://appshunter.io/ios/app/cidr-tool/id6584521890)

**In-app purchases:** none


## Frequently asked questions

### Is CIDR free?

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

### Is CIDR Tool free?

CIDR Tool costs $0.99, with no in-app purchases.

### Do CIDR or CIDR Tool have ads?

Neither CIDR nor CIDR Tool shows ads.

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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.*