# Calex PyroNFC vs Decibel Meter Noise Detector

The clearest difference is rating: Decibel Meter Noise Detector at 3.0 against Calex PyroNFC's 1.0. Calex PyroNFC's advantage is in-app purchases (none vs 3) and iOS requirement (8.0 vs 13.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Decibel Meter Noise Detector sells 3 in-app purchases, starting at $4.99 per 7 days. Calex PyroNFC asks for nothing beyond the download.

Decibel Meter Noise Detector holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Calex PyroNFC ships an update every 3 weeks, Decibel Meter Noise Detector every 5 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calex PyroNFC | Decibel Meter Noise Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/calex-pyronfc/id1544238822/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-noise-detector/id6745646643/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 36 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Calex Electronics Limited](https://appshunter.io/developer/1544238824) | [Shenzhen MC Jisu Technology Co., Ltd.](https://appshunter.io/developer/1808919688) |

## What reviewers say

### Calex PyroNFC

[App page](https://appshunter.io/ios/app/calex-pyronfc/id1544238822)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibel Meter Noise Detector

[App page](https://appshunter.io/ios/app/decibel-meter-noise-detector/id6745646643)

This tool measures ambient noise levels in decibels (dB) in real-time. It allows users to record audio, capture photos with decibel data, and view historical noise level changes. Reports can be generated and exported for reference.

**Highlights:** Real-time decibel detection, Audio recording with peak decibel marking, Multimedia evidence collection with watermarks, Real-time chart display of noise changes, Historical decibel record viewing, Data detection report export

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Member | $4.99 | per 7 days |
| One year membership | $45.00 | per year |
| Life member | $19.99 | one-time |


## Frequently asked questions

### Is Calex PyroNFC free?

Calex PyroNFC is free to download, with no in-app purchases.

### Is Decibel Meter Noise Detector free?

Decibel Meter Noise Detector is free to download, with in-app purchases available.

### Which has better reviews, Calex PyroNFC or Decibel Meter Noise Detector?

Decibel Meter Noise Detector is rated higher. Calex PyroNFC averages 1.0 out of 5 from 1 ratings, while Decibel Meter Noise Detector averages 3.0 from 2 ratings.

### Do Calex PyroNFC or Decibel Meter Noise Detector have ads?

Neither Calex PyroNFC nor Decibel Meter Noise Detector shows ads.

### Which is updated more often, Calex PyroNFC or Decibel Meter Noise Detector?

Calex PyroNFC ships an update every 3 weeks, and Decibel Meter Noise Detector every 5 weeks. Most recently, Calex PyroNFC was updated on October 29, 2026 and Decibel Meter Noise Detector on October 24, 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.*