MqttClient vs Calex PyroNFC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MqttClient
This utility app provides a fast client for MQTT, the internet of things protocol. It allows users to test broker servers, monitor topics, send and receive messages, and save configurations for quick access. It's designed for testing MQTT broker activities.
- MQTT client functionality
- Broker server testing
- Topic monitoring
- Send and receive messages
- Save configurations
- User/password authentication
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A simple and fast client for Mqtt, the "internet of things protocol" It can be use for test your Broker server , check if the broker it's online, check your topics. You can send messages and read messages from a topic, you can set user, password, client id, topic, port and server ip. You can save a configuration for fast test. The tool it's made for test activities on Mqtt server Broker, no SSL support at now. Don't insert in HOST "tcp://" only host name or ip
Calex PyroNFC
Configure infrared temperature sensors and read their current temperature using your device. Save settings to your phone and transfer them wirelessly to the sensor via NFC. You can also use NFC to capture temperature readings directly from the sensor.
- Configure PyroNFC sensor settings
- Save settings to iOS device
- Transmit settings via NFC
- Read temperature via NFC
- Select temperature units (°C/°F)
- Set linear voltage output range
- Configure alarm thresholds
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Take temperature readings and configure the settings of Calex PyroNFC infrared temperature sensors Save settings to your iOS device, and tap the PyroNFC sensor with the device to transmit them. Settings are saved to the sensor even if the sensor is not powered. With the sensor powered, take the measured temperature by touching it with your NFC device. Configurable parameters: - Select units: °C/°F - Linear voltage output range (0-5/1-5/0-10 V DC) - Temperature range for voltage output - Alarm output threshold and hysteresis - Emissivity setting - Reflected temperature - Averaging period - Peak / valley hold mode - Hold period
Screenshots
Verdict
The clearest difference is update cadence: Calex PyroNFC at every 3 weeks against MqttClient's every 10 months. Calex PyroNFC also leads on iOS requirement (8.0 vs 16.0). On price, rating, review sentiment and ratings volume 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 1.0 for MqttClient against 1.0 for Calex PyroNFC. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
MqttClient ships an update every 10 months, Calex PyroNFC every 3 weeks. The most recent releases landed on October 6, 2026 and October 29, 2026 respectively.
| Parameter | MqttClient | Calex PyroNFC |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 1.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 10 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Luca Ceci | Calex Electronics Limited |
Customer experience
MqttClient
Calex PyroNFC
In-app purchases
MqttClient
No in-app purchases
Calex PyroNFC
No in-app purchases
