# Subnet CIDR Pro vs 42 PDF Editor

The clearest difference is update cadence: 42 PDF Editor at every 2 days against Subnet CIDR Pro's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Subnet CIDR Pro ships an update fortnightly, 42 PDF Editor every 2 days. The most recent releases landed on October 21, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Subnet CIDR Pro | 42 PDF Editor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subnet-cidr-pro/id6816397989/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Paid | — |
| Size | 2 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [超 张](https://appshunter.io/developer/1895478141) | [Mohammed Shehada](https://appshunter.io/developer/1886976829) |

## What reviewers say

### Subnet CIDR Pro

[App page](https://appshunter.io/ios/app/subnet-cidr-pro/id6816397989)

This app is a fast and accurate IPv4 subnet calculator and visual planner for network professionals and students. It offers instant calculations, VLSM planning, and a comprehensive CIDR reference, all while operating offline with no ads or tracking.

**Highlights:** Instant IPv4 & CIDR calculation, Visual VLSM subnet planner, Complete CIDR & mask reference, Offline operation, No ads or tracking, One-tap copying

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 42 PDF Editor

[App page](https://appshunter.io/ios/app/42-pdf-editor-sign-and-annotate/id6820656786)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Subnet CIDR Pro free?

Subnet CIDR Pro is free to download, with no in-app purchases.

### Is 42 PDF Editor free?

42 PDF Editor is free to download, with no in-app purchases.

### Do Subnet CIDR Pro or 42 PDF Editor have ads?

Neither Subnet CIDR Pro nor 42 PDF Editor shows ads.

### Which is updated more often, Subnet CIDR Pro or 42 PDF Editor?

Subnet CIDR Pro ships an update fortnightly, and 42 PDF Editor every 2 days. Most recently, Subnet CIDR Pro was updated on October 21, 2026 and 42 PDF Editor on November 3, 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.*