# Sec MQTT Pub vs Toolbox (By Koizeay)

The clearest difference is price: Sec MQTT Pub at Free against Toolbox (By Koizeay)'s $6.69. Toolbox (By Koizeay)'s advantage is update cadence (every 6 weeks vs every 28 months) and ratings volume (5 vs 1). On rating, ads, in-app purchases and device support there is nothing between them.

Sec MQTT Pub is free to download; Toolbox (By Koizeay) costs $6.69 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Sec MQTT Pub against 5.0 for Toolbox (By Koizeay). That said, the two scores are not equally well evidenced: Toolbox (By Koizeay) has 5 ratings behind it against 1, so its average is the more settled of the two.

Sec MQTT Pub ships an update every 28 months, Toolbox (By Koizeay) every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Sec MQTT Pub | Toolbox (By Koizeay) |
| --- | --- | --- |
| Price | **Free** | $6.69 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sec-mqtt-pub/id1554992163/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/toolbox-by-koizeay/id6466197390/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 6 weeks** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 68 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Care Active Corp.](https://appshunter.io/developer/1739001802) | [Jeremy Turin](https://appshunter.io/developer/1685232488) |

## What reviewers say

### Sec MQTT Pub

[App page](https://appshunter.io/ios/app/sec-mqtt-pub/id1554992163)

This app provides a secure MQTT client for communicating with IoT devices using X.509 authentication and AES-128 encryption. It allows for customized messages and topics, offering a robust solution for secure IoT project communication.

**Highlights:** X.509 authentication, Root CA authentication support, AES-128 encryption, Face ID / Touch ID support, Customizable buttons for messages and topics, Open-source project

**In-app purchases:** none


### Toolbox (By Koizeay)

[App page](https://appshunter.io/ios/app/toolbox-by-koizeay/id6466197390)

This utility app offers a comprehensive collection of tools for various tasks, including calculations, conversions, networking, and creative aids. It's an open-source project designed to be a versatile digital toolkit for everyday needs.

**Highlights:** Area calculator, Base converter, File encryption, Network tools, Password generator, QR code reader/creator, Speedometer

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

**In-app purchases:** none


## Frequently asked questions

### Is Sec MQTT Pub free?

Sec MQTT Pub is free to download, with no in-app purchases.

### Is Toolbox (By Koizeay) free?

Toolbox (By Koizeay) costs $6.69, with no in-app purchases.

### Which has better reviews, Sec MQTT Pub or Toolbox (By Koizeay)?

Sec MQTT Pub and Toolbox (By Koizeay) are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Sec MQTT Pub or Toolbox (By Koizeay) have ads?

Neither Sec MQTT Pub nor Toolbox (By Koizeay) shows ads.

### Which is updated more often, Sec MQTT Pub or Toolbox (By Koizeay)?

Sec MQTT Pub ships an update every 28 months, and Toolbox (By Koizeay) every 6 weeks. Most recently, Sec MQTT Pub was updated on November 3, 2026 and Toolbox (By Koizeay) on November 3, 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.*