# FacilityLog vs Subnet CIDR Pro

The clearest difference is in-app purchases: Subnet CIDR Pro at none against FacilityLog's 3. Subnet CIDR Pro also leads on update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. FacilityLog sells 3 in-app purchases, starting at $4.99 per month. Subnet CIDR Pro asks for nothing beyond the download.

FacilityLog ships an update every 4 months, Subnet CIDR Pro fortnightly. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | FacilityLog | Subnet CIDR Pro |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | — | Paid |
| Size | 7 MB | 2 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [慧慧 高](https://appshunter.io/developer/1887721875) | [超 张](https://appshunter.io/developer/1895478141) |

## What reviewers say

### FacilityLog

[App page](https://appshunter.io/ios/app/facilitylog/id6770400420)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $39.99 | per year |
| Pro Lifetime | $249.00 | one-time |


### 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 FacilityLog free?

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

### Is Subnet CIDR Pro free?

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

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

Neither FacilityLog nor Subnet CIDR Pro shows ads.

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

FacilityLog ships an update every 4 months, and Subnet CIDR Pro fortnightly. Most recently, FacilityLog was updated on October 16, 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.*