# SmarterNoise Pro vs Decibel Meter

The clearest difference is rating: SmarterNoise Pro at 4.4 against Decibel Meter's 3.5. SmarterNoise Pro also leads on update cadence (monthly vs every 11 months) and iOS requirement (12.0 vs 15.0). Decibel Meter's advantage is review sentiment (50% vs 29%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. SmarterNoise Pro sells 4 one-off in-app purchases and Decibel Meter sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SmarterNoise Pro holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 31 and 54 respectively. Written reviews complicate that: 29% of SmarterNoise Pro's written reviews are positive against 50% of Decibel Meter's, so the app with the better star average is not the one people write more warmly about.

SmarterNoise Pro ships an update monthly, Decibel Meter every 11 months. The most recent releases landed on September 7, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SmarterNoise Pro | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/smarternoise-pro/id1466745030/reviews)** | [3.5 (54 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105/reviews) |
| Number of ratings | 31 | **54** |
| Positive reviews | 28.6% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 11 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 24 MB | 18 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Johan Rogard](https://appshunter.io/developer/1384299041) | [Rychard Matskevich](https://appshunter.io/developer/1395390712) |

## What reviewers say

### SmarterNoise Pro

[App page](https://appshunter.io/ios/app/smarternoise-pro/id1466745030)

This advanced sound level meter app offers detailed audio analysis with features like frequency spectrum display and data export. It allows for precise sound measurements in both video and audio recording modes, with options for A-, C-, or no weighting.

**Highlights:** Sound level measurement in video/audio modes, Frequency spectrum display, Export measurement data (CSV), Sound level activated audio recording, Calibration tool, Full HD video recording (paid)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camera upgrade | $0.99 | one-time |
| Frequency spectrum indicator | $1.99 | one-time |
| Video and audio recording | $1.99 | one-time |
| Spectrogram display | $1.99 | one-time |


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105)

This tool transforms your iPhone into a professional sound level meter, measuring decibels and analyzing sound frequencies. It helps identify harmful noise levels to protect your hearing and health, offering detailed insights and measurement history.

**Highlights:** Professional sound level meter, Sound frequency analysis, Noise dosimeter with standards, Accurate sound pressure measurements, Save and export measurements, Advanced measurement charts, MIN/MAX/AVG data

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter Premium Weekly | $3.99 | per 7 days |
| Noise Spectrum Detector VIP | $8.99 | per month |
| Noise Frequency Checker VIP | $19.99 | per 3 months |
| Sound Level Analyzer dB VIP | $29.99 | per year |


## Frequently asked questions

### Is SmarterNoise Pro free?

SmarterNoise Pro is free to download, with in-app purchases available.

### Is Decibel Meter free?

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

### Which has better reviews, SmarterNoise Pro or Decibel Meter?

SmarterNoise Pro is rated higher. SmarterNoise Pro averages 4.4 out of 5 from 31 ratings, while Decibel Meter averages 3.5 from 54 ratings.

### Do SmarterNoise Pro or Decibel Meter have ads?

Neither SmarterNoise Pro nor Decibel Meter shows ads.

### Which is updated more often, SmarterNoise Pro or Decibel Meter?

SmarterNoise Pro ships an update monthly, and Decibel Meter every 11 months. Most recently, SmarterNoise Pro was updated on September 7, 2026 and Decibel Meter on September 20, 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.*