# bluSensor vs Decibel Metre (Sound Meter)

The clearest difference is review sentiment: Decibel Metre (Sound Meter) at 68% against bluSensor's 0%. Decibel Metre (Sound Meter) also leads on rating (4.5 vs 1.0) and ratings volume (578 vs 5). bluSensor's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases and device support there is nothing between them.

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

Decibel Metre (Sound Meter) holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Decibel Metre (Sound Meter) has 578 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of bluSensor's written reviews are positive against 68% of Decibel Metre (Sound Meter)'s.

bluSensor ships an update every 2 months, Decibel Metre (Sound Meter) every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | bluSensor | Decibel Metre (Sound Meter) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (5 ratings)](https://appshunter.io/ios/app/blusensor/id1018752395/reviews) | **[4.5 (578 ratings)](https://appshunter.io/ios/app/decibel-metre-sound-meter/id1590659820/reviews)** |
| Number of ratings | 5 | **578** |
| Positive reviews | 0.0% of reviews | **68.3% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Ad-supported |
| Size | 33 MB | 6 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Almendo Technologies GmbH](https://appshunter.io/developer/1018752244) | [UniCom Technology](https://appshunter.io/developer/1270764210) |

## What reviewers say

### bluSensor

[App page](https://appshunter.io/ios/app/blusensor/id1018752395)

Monitor temperature, humidity, and air quality with wireless sensors. Get real-time data, alerts, and historical tracking on your smartphone or tablet. Suitable for home and professional environments.

**Highlights:** Real-time environmental monitoring, Temperature and humidity tracking, Air quality alerts, Historical data logging, Smartphone and tablet compatibility, Web app access

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Decibel Metre (Sound Meter)

[App page](https://appshunter.io/ios/app/decibel-metre-sound-meter/id1590659820)

This application functions as a smart sound level meter, utilizing your device's microphone to measure ambient noise in decibels (dBA). It provides real-time readings on a digital screen and displays historical data through a graph. The app also shows reference noise levels and tracks minimum, average, and maximum decibel values.

**Highlights:** Measures sound level in decibels (dBA), Uses built-in microphone, Displays readings on digital screen, Shows current noise reference, Tracks min/avg/max decibel values, Visualizes decibel data on a graph

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 👍 Helpful tool for measuring sound levels
- 👍 Straightforward and effective
- 👍 Genuinely free and useful

**What reviewers complain about**

- 🐛 Inaccurate readings
- 🐛 Inconsistent measurements
- 🐛 Reset button doesn't reset average value
- 🐛 No calibration feature

**Reported bugs**

- Microphone not registering any noise
- Completely unresponsive app

**Requested features**

- Quiet room label correction
- Add fast and slow response time settings
- Ability to export/save measurement logs and graphs


## Frequently asked questions

### Is bluSensor free?

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

### Is Decibel Metre (Sound Meter) free?

Decibel Metre (Sound Meter) is free to download, with no in-app purchases.

### Which has better reviews, bluSensor or Decibel Metre (Sound Meter)?

Decibel Metre (Sound Meter) is rated higher. bluSensor averages 1.0 out of 5 from 5 ratings, while Decibel Metre (Sound Meter) averages 4.5 from 578 ratings.

### Do bluSensor or Decibel Metre (Sound Meter) have ads?

Decibel Metre (Sound Meter) shows ads; bluSensor does not.

### Which is updated more often, bluSensor or Decibel Metre (Sound Meter)?

bluSensor ships an update every 2 months, and Decibel Metre (Sound Meter) every 3 months. Most recently, bluSensor was updated on November 1, 2026 and Decibel Metre (Sound Meter) on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*