Comparison

Sec MQTT Pub vs Sub

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sec MQTT Pub

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
Read full description

TLS IoT is an open-source end-to-end secured MQTTs client to communicate with your IoT device securely. The client supports the following features: • Use only X.509 to authenticate and secure the communication • Support Root CA authentication • AES-128 encryption to prevent the middle-man attack • Support Face ID / Touch ID You can define up to 4 buttons with customized messages and topics. TLS IoT tool is a secured and easy-to-use app. If you are looking for a highly secured MQTT tool for your IoT project, this app is for you. For more information about this project, including the source code and demos, please visit our project site: https://github.com/tracmo/open-tls-iot-client

About

Sub

Features
Read full description

Sub-Connect mobile app helps in monitoring and measuring in real-time the temperature, humidity, energy, and other sensor values, output status, faults, and setPoint control operations for various connected devices. Receive timely alerts for excursions and incursions when assets go out of threshold, enabling you to take precautionary and necessary measures to safely preserve products in cold storages/rooms. Salient Features: Boost your business and achieve peace of mind with "Alerts & Notifications" on the go. Scheduled Reports & Analytics to assist management in informed decision-making. Sub-Connect is a proactive cloud-hosted platform that supports any Modbus-based Sub-zero controller. Dependable, reliable, and trusted Data Loggers for recording and presenting accurate data. Set custom rules as per your business needs and assign them to designated users or roles. Effortless performance tracking and data access for multiple assets by multiple users. Track your device status in real-time with alerts, SMS, and emails accessible anytime, anywhere. Contact us for controller compatibility.

Screenshots

Sec MQTT Pub4 screens
Sub4 screens

Verdict

The call

The clearest difference is update cadence: Sub at fortnightly against Sec MQTT Pub's every 28 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Sec MQTT Pub ships an update every 28 months, Sub fortnightly. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

Scorecard1 real difference · 8 level
Sec MQTT Pub versus Sub: the parameters behind the verdict, then further details
ParameterSec MQTT PubSub
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 28 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.014.0
Further details — not scored
Size3 MB43 MB
Age rating4+4+
DeveloperCare Active Corp.PVR Controls

In-app purchases

None

Sec MQTT Pub

No in-app purchases

None

Sub

No in-app purchases

Questions

Is Sec MQTT Pub free?
Sec MQTT Pub is free to download, with no in-app purchases.
Is Sub free?
Sub is free to download, with no in-app purchases.
Do Sec MQTT Pub or Sub have ads?
Neither Sec MQTT Pub nor Sub shows ads.
Which is updated more often, Sec MQTT Pub or Sub?
Sec MQTT Pub ships an update every 28 months, and Sub fortnightly. Most recently, Sec MQTT Pub was updated on September 8, 2026 and Sub on September 14, 2026.

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