# ObsiKO vs Subnet CIDR Pro

The clearest difference is device support: ObsiKO at 4 against Subnet CIDR Pro's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

## The numbers

| Metric | ObsiKO | Subnet CIDR Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/subnet-cidr-pro/id6816397989/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | — | Paid |
| Size | 75 MB | 1 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hyojin Kim](https://appshunter.io/developer/6783405453) | [超 张](https://appshunter.io/developer/1895478141) |

## What reviewers say

### ObsiKO

[App page](https://appshunter.io/ios/app/obsiko-ai-note-plus-mindmap/id6783405451)

**Features:** macOS Compatibility, Apple Watch app, 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 ObsiKO free?

ObsiKO 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.

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

Neither ObsiKO nor Subnet CIDR Pro shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*