# Flowbox Enterprise vs CIDR Calc

The clearest difference is iOS requirement: Flowbox Enterprise at 13.0 against CIDR Calc's 16.0. 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.

Flowbox Enterprise ships an update every 28 months, CIDR Calc every 19 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Flowbox Enterprise | CIDR Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr-calc/id1565667811/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 19 months** |
| Monetization | — | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Flowbox s.r.o.](https://appshunter.io/developer/690467615) | [Paul Smicker](https://appshunter.io/developer/1565667813) |

## What reviewers say

### Flowbox Enterprise

[App page](https://appshunter.io/ios/app/flowbox-enterprise/id1014994569)

**Features:** macOS Compatibility

**In-app purchases:** none


### CIDR Calc

[App page](https://appshunter.io/ios/app/cidr-calc/id1565667811)

Calculate subnet details, including IP addresses, masks, and reverse masks, using CIDR notation. Generate and share lists of subnets and hosts within the next higher octet. This tool simplifies network calculations for IT professionals and students.

**Highlights:** Subnet calculation, IP address display, Mask and reverse mask, Shareable subnet lists, Host calculation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flowbox Enterprise free?

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

### Is CIDR Calc free?

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

### Do Flowbox Enterprise or CIDR Calc have ads?

Neither Flowbox Enterprise nor CIDR Calc shows ads.

### Which is updated more often, Flowbox Enterprise or CIDR Calc?

Flowbox Enterprise ships an update every 28 months, and CIDR Calc every 19 months. Most recently, Flowbox Enterprise was updated on October 9, 2026 and CIDR Calc on October 10, 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.*