# IPv4サブネット計算機 vs THERble

The clearest difference is iOS requirement: IPv4サブネット計算機 at 8.0 against THERble's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

IPv4サブネット計算機 ships an update every 11 months, THERble every 16 months. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | IPv4サブネット計算機 | THERble |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 16 months |
| Monetization | Free | — |
| Size | 1 MB | 46 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [KTC.CO.,Ltd](https://appshunter.io/developer/516464543) | [SHIN NIPPON AIR TECHNOLOGIES CO.,LTD.](https://appshunter.io/developer/1526286874) |

## What reviewers say

### IPv4サブネット計算機

[App page](https://appshunter.io/ios/app/ipv4/id1048945662)

This app simplifies IP address calculations for network engineers. Easily determine network addresses, broadcast addresses, IP ranges, host counts, and Cisco wildcard masks by rotating a picker. It automatically retrieves your IP address via Wi-Fi and allows sharing of results.

**Highlights:** IP address and subnet length calculation, Network and broadcast address determination, IP address range and host count, Cisco wildcard mask calculation, Automatic IP address retrieval via Wi-Fi, Smooth and fast IP address calculation, Shareable calculation results

**Features:** macOS Compatibility

**In-app purchases:** none


### THERble

[App page](https://appshunter.io/ios/app/therble/id1630881111)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IPv4サブネット計算機 free?

IPv4サブネット計算機 is free to download, with no in-app purchases.

### Is THERble free?

THERble is free to download, with no in-app purchases.

### Do IPv4サブネット計算機 or THERble have ads?

Neither IPv4サブネット計算機 nor THERble shows ads.

### Which is updated more often, IPv4サブネット計算機 or THERble?

IPv4サブネット計算機 ships an update every 11 months, and THERble every 16 months. Most recently, IPv4サブネット計算機 was updated on September 13, 2026 and THERble on September 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.*