# Decibel Meter vs MonoNoise

The clearest difference is in-app purchases: MonoNoise at none against Decibel Meter's 4. MonoNoise 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 $0.99 per 7 days. MonoNoise asks for nothing beyond the download.

Decibel Meter ships an update every 2 months, MonoNoise every 6 weeks. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Decibel Meter | MonoNoise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/decibel-meter-noise-level-db/id1501310833/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 35 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grima Hdez](https://appshunter.io/developer/1741481582) | [Pavel Liankevich](https://appshunter.io/developer/1825480001) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-noise-level-db/id1501310833)

Measure environmental noise levels and display decibel values in various formats. This smart sound meter app features a tidy graphic design and provides real-time noise detection using your mobile microphone. It offers clear visualizations of sound levels and includes helpful information about decibel measurements.

**Highlights:** Measures environmental noise decibel values, Displays dB values in various forms, Tidy graphic design with high frame rate, Uses mobile microphone for ambient noise measurement, Shows current, min, average, and max decibel values, Displays decibel change chart, Auto decibel value calibration

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Sound Meter Pro Weekly | $0.99 | per 7 days |
| Pro Monthly | $1.99 | per month |
| Decibel Sound Meter Pro Yearly | $4.99 | per year |
| Decibel Pro Lifetime | $9.99 | one-time |


### MonoNoise

[App page](https://appshunter.io/ios/app/mononoise/id6748365867)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter free?

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

### Is MonoNoise free?

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

### Do Decibel Meter or MonoNoise have ads?

Decibel Meter shows ads; MonoNoise does not.

### Which is updated more often, Decibel Meter or MonoNoise?

Decibel Meter ships an update every 2 months, and MonoNoise every 6 weeks. Most recently, Decibel Meter was updated on October 25, 2026 and MonoNoise on October 6, 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.*