# IPv4サブネット計算機 vs 2Do

The clearest difference is price: IPv4サブネット計算機 at Free against 2Do's $19.99. IPv4サブネット計算機 also leads on device support (3 vs 1) and iOS requirement (8.0 vs 18.6). 2Do's advantage is review sentiment (100% vs 60%) and update cadence (daily vs every 11 months). On ads and in-app purchases there is nothing between them.

IPv4サブネット計算機 is free to download; 2Do costs $19.99 up front. 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, 2Do daily. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | IPv4サブネット計算機 | 2Do |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | — | **[4.9 (15 ratings)](https://appshunter.io/ios/app/2do-to-do-list-tasks-and-notes/id1470067606/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Daily** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 159 MB |
| Requires iOS | **8.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [KTC.CO.,Ltd](https://appshunter.io/developer/516464543) | [Beehive Innovations Services](https://appshunter.io/developer/285944186) |

## 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


### 2Do

[App page](https://appshunter.io/ios/app/2do-to-do-list-tasks-and-notes/id1470067606)

This task management app offers a fluid interface with deep features for organizing daily tasks and projects. It supports natural language input, quick capture methods, and flexible organization with lists, tags, and smart searches. Designed for iPad, it provides a desktop-grade experience with full keyboard and multitasking support.

**Highlights:** Natural language input for task creation, Desktop-grade multitasking on iPad, Quick capture via widgets and Siri, Markdown notes with collected links, Flexible repeat options and start dates, Smart lists for saved searches, Tagging system for context filtering

**Features:** Vision Pro support

**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 2Do free?

2Do costs $19.99, with no in-app purchases.

### Do IPv4サブネット計算機 or 2Do have ads?

Neither IPv4サブネット計算機 nor 2Do shows ads.

### Which is updated more often, IPv4サブネット計算機 or 2Do?

IPv4サブネット計算機 ships an update every 11 months, and 2Do daily. Most recently, IPv4サブネット計算機 was updated on October 1, 2026 and 2Do on October 11, 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.*