# IPMask vs CIDR

The clearest difference is in-app purchases: IPMask at none against CIDR's 1. CIDR's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). On price, rating, ratings volume and monetization model there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for IPMask against 5.0 for CIDR. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

IPMask ships an update every 5 months, CIDR every 3 weeks. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | IPMask | CIDR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ipmask-subnet-calculator/id1031084465/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 5 MB | 23 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleksei Neronov](https://appshunter.io/developer/551009381) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### IPMask

[App page](https://appshunter.io/ios/app/ipmask-subnet-calculator/id1031084465)

This utility helps calculate IP network addresses and subnetworks for IPv4. It assists in understanding IP addressing functions like host identification and location addressing within a network. The tool is useful for dividing networks into smaller subnetworks through subnetting.

**Highlights:** IP network address calculation, Subnetwork subdivision, Host identification, Location addressing, IPv4 support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**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 IPMask free?

IPMask 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, IPMask or CIDR?

IPMask and CIDR are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do IPMask or CIDR have ads?

IPMask shows ads; CIDR does not.

### Which is updated more often, IPMask or CIDR?

IPMask ships an update every 5 months, and CIDR every 3 weeks. Most recently, IPMask was updated on October 15, 2026 and CIDR on October 11, 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.*