# Protexb vs Kodura Subnet Calculator

The clearest difference is update cadence: Kodura Subnet Calculator at daily against Protexb's every 5 months. Protexb's advantage is iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Protexb ships an update every 5 months, Kodura Subnet Calculator daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Protexb | Kodura Subnet Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protexb/id6747944068/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free | — |
| Size | 11 MB | 6 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [TheGroceryShelf LLC](https://appshunter.io/developer/1823514695) | [Kodura LLC](https://appshunter.io/developer/1881658044) |

## What reviewers say

### Protexb

[App page](https://appshunter.io/ios/app/protexb/id6747944068)

This app provides enhanced internet privacy and security by allowing users to switch DNS servers. It blocks ads and trackers for a cleaner, safer browsing experience with a built-in VPN tunnel.

**Highlights:** Switch DNS profiles, Built-in VPN tunnel, Ad-blocking, Tracker protection, Real-time ping display, One-tap connect/disconnect

**Features:** macOS Compatibility

**In-app purchases:** none


### Kodura Subnet Calculator

[App page](https://appshunter.io/ios/app/kodura-subnet-calculator/id6811453029)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Protexb free?

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

### Is Kodura Subnet Calculator free?

Kodura Subnet Calculator is free to download, with no in-app purchases.

### Do Protexb or Kodura Subnet Calculator have ads?

Neither Protexb nor Kodura Subnet Calculator shows ads.

### Which is updated more often, Protexb or Kodura Subnet Calculator?

Protexb ships an update every 5 months, and Kodura Subnet Calculator daily. Most recently, Protexb was updated on October 30, 2026 and Kodura Subnet Calculator on October 31, 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.*