# Smarthome MQDC vs Decibel Meter !

The clearest difference is in-app purchases: Smarthome MQDC at none against Decibel Meter !'s 4. Smarthome MQDC also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter ! sells 4 in-app purchases, starting at $7.99 per 7 days. Smarthome MQDC asks for nothing beyond the download.

Smarthome MQDC ships an update weekly, Decibel Meter ! fortnightly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Smarthome MQDC | Decibel Meter ! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (20 ratings)](https://appshunter.io/ios/app/decibel-meter/id6757183442/reviews)** |
| Number of ratings | — | **20** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 135 MB | 104 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Obotrons Corporation Limited](https://appshunter.io/developer/1374105658) | [Pravin Gondaliya](https://appshunter.io/developer/1210259494) |

## What reviewers say

### Smarthome MQDC

[App page](https://appshunter.io/ios/app/smarthome-mqdc/id6443578676)

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

**In-app purchases:** none


### Decibel Meter !

[App page](https://appshunter.io/ios/app/decibel-meter/id6757183442)

This app measures and analyzes sound levels in real-time, providing clear decibel readings and tracking noise changes. It offers advanced features like dosimeter functions, visual graphs, and the ability to capture photos and videos with dB overlays. Save and export your sound data for comprehensive insights into your environment.

**Highlights:** Real-time decibel readings, Advanced dosimeter functions, Multiple sound graphs, Photo & video capture with dB overlay, Recording history and export, Frequency analysis

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Week Premium Access | $7.99 | per 7 days |
| 1-Month Premium Access | $14.99 | per month |
| 1-Year Premium Access | $39.99 | per year |
| Lifetime Premium Access | $69.99 | one-time |


## Frequently asked questions

### Is Smarthome MQDC free?

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

### Is Decibel Meter ! free?

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

### Do Smarthome MQDC or Decibel Meter ! have ads?

Decibel Meter ! shows ads; Smarthome MQDC does not.

### Which is updated more often, Smarthome MQDC or Decibel Meter !?

Smarthome MQDC ships an update weekly, and Decibel Meter ! fortnightly. Most recently, Smarthome MQDC was updated on October 25, 2026 and Decibel Meter ! on October 31, 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.*