# CIDR vs calQuery

The clearest difference is in-app purchases: calQuery at none against CIDR's 1. CIDR's advantage is update cadence (every 3 weeks vs every 9 months). On price, rating, ratings volume and ads there is nothing between them.

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

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

CIDR ships an update every 3 weeks, calQuery every 9 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | CIDR | calQuery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/calquery/id1596650479/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Free | Free |
| Size | 23 MB | 1 MB |
| Requires iOS | 15.6 | **14.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [akira ohmachi](https://appshunter.io/developer/1338624340) | [Uwe Holtkamp](https://appshunter.io/developer/1191830477) |

## 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 |


### calQuery

[App page](https://appshunter.io/ios/app/calquery/id1596650479)

Easily search your iPhone or iPad calendar for past events. Results can be sorted by date, location, or alphabetically. Tapping a result opens the corresponding day in your native calendar app.

**Highlights:** Search past calendar events, Sort results by date, location, alphabet, Open events in native calendar, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CIDR free?

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

### Is calQuery free?

calQuery is free to download, with no in-app purchases.

### Which has better reviews, CIDR or calQuery?

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

### Do CIDR or calQuery have ads?

Neither CIDR nor calQuery shows ads.

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

CIDR ships an update every 3 weeks, and calQuery every 9 months. Most recently, CIDR was updated on October 11, 2026 and calQuery 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.*