# 2FA TOTP Authenticator vs Sec MQTT Pub

The clearest difference is price: Sec MQTT Pub at Free against 2FA TOTP Authenticator's $0.99. Sec MQTT Pub also leads on iOS requirement (14.0 vs 26.0). 2FA TOTP Authenticator's advantage is update cadence (every 5 weeks vs every 28 months). On ads, in-app purchases and device support there is nothing between them.

Sec MQTT Pub is free to download; 2FA TOTP Authenticator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

2FA TOTP Authenticator ships an update every 5 weeks, Sec MQTT Pub every 28 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 2FA TOTP Authenticator | Sec MQTT Pub |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sec-mqtt-pub/id1554992163/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 28 months |
| Monetization | — | Free |
| Size | 15 MB | 3 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [捷 凌](https://appshunter.io/developer/1509023962) | [Care Active Corp.](https://appshunter.io/developer/1739001802) |

## What reviewers say

### 2FA TOTP Authenticator

[App page](https://appshunter.io/ios/app/2fa-totp-authenticator-widget/id1509275023)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is 2FA TOTP Authenticator free?

2FA TOTP Authenticator costs $0.99, with no in-app purchases.

### Is Sec MQTT Pub free?

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

### Do 2FA TOTP Authenticator or Sec MQTT Pub have ads?

Neither 2FA TOTP Authenticator nor Sec MQTT Pub shows ads.

### Which is updated more often, 2FA TOTP Authenticator or Sec MQTT Pub?

2FA TOTP Authenticator ships an update every 5 weeks, and Sec MQTT Pub every 28 months. Most recently, 2FA TOTP Authenticator was updated on October 2, 2026 and Sec MQTT Pub 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.*