# Subnet Mask vs 電気系資格 統合版

The clearest difference is price: Subnet Mask at Free against 電気系資格 統合版's $4.99. Subnet Mask also leads on update cadence (every 6 months vs every 29 months). 電気系資格 統合版's advantage is in-app purchases (none vs 1) and ads (none vs shown).

Subnet Mask is free to download; 電気系資格 統合版 costs $4.99 up front. Subnet Mask sells 1 one-off in-app purchase. 電気系資格 統合版 asks for nothing beyond the download.

Subnet Mask ships an update every 6 months, 電気系資格 統合版 every 29 months. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Subnet Mask | 電気系資格 統合版 |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.6 (31 ratings)](https://appshunter.io/ios/app/subnet-mask/id580727679/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 29 months |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 73 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Takahiro Furuya](https://appshunter.io/developer/503779747) | [harada keiko](https://appshunter.io/developer/1457179049) |

## What reviewers say

### Subnet Mask

[App page](https://appshunter.io/ios/app/subnet-mask/id580727679)

This app provides a quick way to calculate subnet masks and host addresses. It features a keypad for CIDR notation and allows for manipulation of keys via swipe gestures, functioning like a slider. It can also be used to determine wildcard masks and the number of addresses.

**Highlights:** Subnet mask calculation, Host address calculation, CIDR notation keypad, Swipe key manipulation, Wildcard mask calculation

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |


### 電気系資格 統合版

[App page](https://appshunter.io/ios/app/id1479263441)

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

**In-app purchases:** none


## Frequently asked questions

### Is Subnet Mask free?

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

### Is 電気系資格 統合版 free?

電気系資格 統合版 costs $4.99, with no in-app purchases.

### Do Subnet Mask or 電気系資格 統合版 have ads?

Subnet Mask shows ads; 電気系資格 統合版 does not.

### Which is updated more often, Subnet Mask or 電気系資格 統合版?

Subnet Mask ships an update every 6 months, and 電気系資格 統合版 every 29 months. Most recently, Subnet Mask was updated on October 14, 2026 and 電気系資格 統合版 on October 8, 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.*