# MSC by SENECA vs CIDR

The clearest difference is in-app purchases: MSC by SENECA at none against CIDR's 1. MSC by SENECA also leads on iOS requirement (12.1 vs 15.6). CIDR's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. CIDR sells 1 one-off in-app purchase. MSC by SENECA asks for nothing beyond the download.

MSC by SENECA ships an update every 5 months, CIDR every 3 weeks. The most recent releases landed on September 30, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | MSC by SENECA | CIDR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 32 MB | 23 MB |
| Requires iOS | **12.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seneca S.r.l.](https://appshunter.io/developer/951622824) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### MSC by SENECA

[App page](https://appshunter.io/ios/app/msc-by-seneca/id1438495833)

**Features:** macOS Compatibility

**In-app purchases:** none


### CIDR

[App page](https://appshunter.io/ios/app/cidr/id1564239813)

This utility calculates IP address ranges from an IP address and subnet mask. It supports IPv4 calculations, including prefix display, address range counts, and bit notation. Useful for quick CIDR notation checks and subnet mask conversions.

**Highlights:** IP address range calculation, Subnet mask to CIDR conversion, IPv4 prefix display, Number of address ranges, Bit notation display, Quick reference table

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is MSC by SENECA free?

MSC by SENECA is free to download, with no in-app purchases.

### Is CIDR free?

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

### Do MSC by SENECA or CIDR have ads?

Neither MSC by SENECA nor CIDR shows ads.

### Which is updated more often, MSC by SENECA or CIDR?

MSC by SENECA ships an update every 5 months, and CIDR every 3 weeks. Most recently, MSC by SENECA was updated on September 30, 2026 and CIDR 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.*