# IPv4サブネット計算機 vs SynoSync

The clearest difference is review sentiment: SynoSync at 100% against IPv4サブネット計算機's 60%. SynoSync also leads on update cadence (every 4 days vs every 11 months). IPv4サブネット計算機's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 16.4). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. SynoSync sells 1 one-off in-app purchase. IPv4サブネット計算機 asks for nothing beyond the download.

IPv4サブネット計算機 ships an update every 11 months, SynoSync every 4 days. The most recent releases landed on September 13, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | IPv4サブネット計算機 | SynoSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synosync/id6762731663/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 1 MB | 20 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [KTC.CO.,Ltd](https://appshunter.io/developer/516464543) | [成豪 董](https://appshunter.io/developer/1584985602) |

## 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


### SynoSync

[App page](https://appshunter.io/ios/app/synosync/id6762731663)

This app synchronizes files between your iOS device and Synology NAS, WebDAV, or SMB servers. It integrates seamlessly with the iOS Files app, offering multiple sync modes and conflict resolution options for efficient file management.

**Highlights:** Synology NAS, WebDAV, SMB support, iOS Files app integration, Server-to-Local sync, Local-to-Server sync, Two-Way synchronization, Flexible conflict resolution, Background syncing

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SynoSync-Plus | $4.99 | one-time |


## 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 SynoSync free?

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

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

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

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

IPv4サブネット計算機 ships an update every 11 months, and SynoSync every 4 days. Most recently, IPv4サブネット計算機 was updated on September 13, 2026 and SynoSync on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*