# About Subnet Mask vs 智睿电控Pro

The clearest difference is ads: 智睿电控Pro at none against About Subnet Mask's shown. 智睿电控Pro also leads on iOS requirement (12.0 vs 15.0). About Subnet Mask's advantage is update cadence (every 9 days vs every 6 weeks). On price, 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.

About Subnet Mask ships an update every 9 days, 智睿电控Pro every 6 weeks. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | About Subnet Mask | 智睿电控Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/about-subnet-mask/id1662782439/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Monetization | Ad-supported | — |
| Size | 9 MB | 53 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jaehwa Noh](https://appshunter.io/developer/1629220949) | [Mantunsci](https://appshunter.io/developer/1061501764) |

## What reviewers say

### About Subnet Mask

[App page](https://appshunter.io/ios/app/about-subnet-mask/id1662782439)

This utility tool calculates subnet masks based on IP and subnet inputs. It supports both IP and CIDR formats, determines class-based network numbers, and saves previous calculations for easy access. Users can also check the class of any IP address.

**Highlights:** Subnet mask calculation, IP and CIDR format support, Class-based network number calculation, IP class checking, Search history

**Features:** macOS Compatibility

**In-app purchases:** none


### 智睿电控Pro

[App page](https://appshunter.io/ios/app/pro/id6455985775)

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

**In-app purchases:** none


## Frequently asked questions

### Is About Subnet Mask free?

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

### Is 智睿电控Pro free?

智睿电控Pro is free to download, with no in-app purchases.

### Do About Subnet Mask or 智睿电控Pro have ads?

About Subnet Mask shows ads; 智睿电控Pro does not.

### Which is updated more often, About Subnet Mask or 智睿电控Pro?

About Subnet Mask ships an update every 9 days, and 智睿电控Pro every 6 weeks. Most recently, About Subnet Mask was updated on October 15, 2026 and 智睿电控Pro on October 6, 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.*