# Subnet Mask Calc vs VLSM | Subnet

The clearest difference is ads: VLSM | Subnet at none against Subnet Mask Calc's shown. On price, update cadence, 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 Mask Calc ships an update every 5 months, VLSM | Subnet every 9 months. The most recent releases landed on November 1, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Subnet Mask Calc | VLSM | Subnet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (23 ratings)](https://appshunter.io/ios/app/subnet-mask-calc/id406375326/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 9 months |
| Monetization | Ad-supported | — |
| Size | 3 MB | 23 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Rouda](https://appshunter.io/developer/396597129) | [Edwin Mejia](https://appshunter.io/developer/1620400021) |

## What reviewers say

### Subnet Mask Calc

[App page](https://appshunter.io/ios/app/subnet-mask-calc/id406375326)

This free utility app quickly calculates subnet masks and wildcard masks for IPv4 networks. It's designed for IT professionals and students to simplify complex networking tasks and aid in certification preparation, offering offline functionality.

**Highlights:** Lightning-fast subnet calculations, Offline network connectivity, Calculates IP and wildcard masks, User-friendly interface, Ideal for IT engineers, Learning aid for certifications

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

**In-app purchases:** none


### VLSM | Subnet

[App page](https://appshunter.io/ios/app/vlsm-subnet/id6504495906)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subnet Mask Calc free?

Subnet Mask Calc is free to download, with no in-app purchases.

### Is VLSM | Subnet free?

VLSM | Subnet is free to download, with no in-app purchases.

### Do Subnet Mask Calc or VLSM | Subnet have ads?

Subnet Mask Calc shows ads; VLSM | Subnet does not.

### Which is updated more often, Subnet Mask Calc or VLSM | Subnet?

Subnet Mask Calc ships an update every 5 months, and VLSM | Subnet every 9 months. Most recently, Subnet Mask Calc was updated on November 1, 2026 and VLSM | Subnet on October 17, 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.*