Comparison

MQTT Spy vs Device Information Tool

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

Head to head
About

MQTT Spy

This application allows for testing the pub/sub MQTT protocol. Connect to an MQTT broker to send and receive messages, control IoT devices, and monitor sensors. It offers features for saving broker lists, custom publishing buttons, and data monitoring in ASCII or HEX.

Highlights
  • Save broker list
  • Custom publish buttons
  • Monitor data as ASCII or HEX
  • Auto-send commands at intervals
  • Keep screen on/off option
  • Send log files
Features
Read full description

INTRODUCTION: - MQTT Spy is used for testing pub/sub protocol with MQTT - Simply create a MQTT connection with broker and test MQTT messaging - With this app, You can control any MQTT enabled IoT devices and monitor sensors with pub/sub protocol. FEATURES: - Save broker list - Separate panels for subscribe and publish data - Custom your own buttons for frequent publishing of same data. - Monitoring receiving data as ASCII or HEX. - Publish Data as ASCII or HEX. - Auto send commands at timed interval - Selection for \r \n at the end of sending data. - Send Log file of Subscribed and Published data. - Keep Screen on/off option.

About

Device Information Tool

Features
Read full description

A fast, accurate, and privacy-first utility that shows everything you want to know about your Apple devices. This tool has the most complete information available. By downloading, you are supporting a small independent open source developer who makes this information freely available to everyone and keeps it updatable by everyone. What you get: • Detailed hardware and software information including model, chip, storage, memory, introduction date, and minimum and maximum OS versions. • Battery information showing level and charge status. • Thermal indicator to recognize device temperature. • Orientation and display data showing how the system reports screen state. • Idle timer control to prevent the screen from dimming or locking when needed. • Device capabilities and sensors such as biometrics, LIDAR, ECG, Fall Detection, Oxygen Sensor, and more. • Direct support and reference links to Apple documentation based on your exact device. Why you’ll love it: • Privacy-first design with no data collection. All device information stays on your device. • Lightweight and fast with minimal battery or resource usage. • Continuously updated with new Apple devices, sensors, and operating system support. • Ideal for developers, IT support, and anyone who wants to know the exact capabilities of their Apple devices. This is a tool for exposing the information in the open source Kudit Device framework. Feel free to contribute to this project at http://github.com/kudit/Device If you have any suggestions or feedback, please reach out to us at support+device@kudit.com! https://www.kudit.com/terms

Screenshots

MQTT Spy4 screens
Device Information Tool4 screens

Verdict

The call

The clearest difference is in-app purchases: Device Information Tool at none against MQTT Spy's 1. Device Information Tool also leads on ads (none vs shown) and update cadence (monthly vs every 4 months). MQTT Spy's advantage is iOS requirement (10.0 vs 15.0). On price 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

MQTT Spy costs $0.99 and Device Information Tool $0.99 up front. MQTT Spy sells 1 one-off in-app purchase. Device Information Tool asks for nothing beyond the download.

UpkeepUpdate frequency

MQTT Spy ships an update every 4 months, Device Information Tool monthly. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
MQTT Spy versus Device Information Tool: the parameters behind the verdict, then further details
ParameterMQTT SpyDevice Information Tool
Price$0.99$0.99
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 monthsMonthly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank—#47 — better
DevicesiPhone, iPad, iPod, MaciPhone, iPad, iPod, Mac
Requires iOS10.0 — better15.0
Further details — not scored
Size26 MB7 MB
Age rating4+4+
DeveloperGopi GadhiyaKudit LLC

In-app purchases

1 purchases

MQTT Spy

One-time1
  • Remove Ads$2.99
None

Device Information Tool

No in-app purchases

Questions

Is MQTT Spy free?
MQTT Spy costs $0.99, and also offers in-app purchases.
Is Device Information Tool free?
Device Information Tool costs $0.99, with no in-app purchases.
Do MQTT Spy or Device Information Tool have ads?
MQTT Spy shows ads; Device Information Tool does not.
Which is updated more often, MQTT Spy or Device Information Tool?
MQTT Spy ships an update every 4 months, and Device Information Tool monthly. Most recently, MQTT Spy was updated on October 9, 2026 and Device Information Tool on October 7, 2026.

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