# Obsideck vs Subnet CIDR Pro

The clearest difference is update cadence: Subnet CIDR Pro at fortnightly against Obsideck's every 2 months. Subnet CIDR Pro also leads on iOS requirement (16.0 vs 26.0). On price, rating, ratings volume and ads there is nothing between them.

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

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

Obsideck ships an update every 2 months, Subnet CIDR Pro fortnightly. The most recent releases landed on October 10, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Obsideck | Subnet CIDR Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/obsideck/id6780370405/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/subnet-cidr-pro/id6816397989/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 4 MB | 2 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shota Hori](https://appshunter.io/developer/1442007331) | [超 张](https://appshunter.io/developer/1895478141) |

## What reviewers say

### Obsideck

[App page](https://appshunter.io/ios/app/obsideck/id6780370405)

A casual Markdown note-taking app for iPhone and iPad that displays your notes as a grid of cards. It allows for quick previews, following links and tags, and editing with a focused editor, all while respecting your privacy.

**Highlights:** Card grid for casual browsing, Rich Markdown preview, Wiki link navigation, Tappable tags, Interactive task lists, Focused Markdown editor, Privacy-focused, no account needed

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Obsideck free?

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

### Is Subnet CIDR Pro free?

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

### Which has better reviews, Obsideck or Subnet CIDR Pro?

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

### Do Obsideck or Subnet CIDR Pro have ads?

Neither Obsideck nor Subnet CIDR Pro shows ads.

### Which is updated more often, Obsideck or Subnet CIDR Pro?

Obsideck ships an update every 2 months, and Subnet CIDR Pro fortnightly. Most recently, Obsideck was updated on October 10, 2026 and Subnet CIDR Pro on October 21, 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.*