# SmarterNoise vs Decibel Meter

The clearest difference is iOS requirement: SmarterNoise at 12.0 against Decibel Meter's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SmarterNoise sells 2 one-off in-app purchases and Decibel Meter sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SmarterNoise ships an update every 6 weeks, Decibel Meter every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SmarterNoise | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (117 ratings)](https://appshunter.io/ios/app/smarternoise/id1384299042/reviews)** | — |
| Number of ratings | **117** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 95 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Johan Rogard](https://appshunter.io/developer/1384299041) | [励毅 陈](https://appshunter.io/developer/1879658258) |

## What reviewers say

### SmarterNoise

[App page](https://appshunter.io/ios/app/smarternoise/id1384299042)

This app measures sound levels, records audio and video, and provides information on noise exposure risks. It features smart icons to help users understand the impact of noise on health and cognitive performance. Save, share, and archive your recordings with this comprehensive tool.

**Highlights:** Sound level measurement, Video and audio recording, Noise exposure risk information, Smart icons for health impact, Archive and sharing of recordings, Calibration, Location and time display

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Long-term measurement | $1.99 | one-time |
| Remove ads | $2.99 | one-time |


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-noise-recorder/id6759807523)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $1.99 | per 7 days |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is SmarterNoise free?

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

### Is Decibel Meter free?

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

### Do SmarterNoise or Decibel Meter have ads?

Both SmarterNoise and Decibel Meter show ads.

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

SmarterNoise ships an update every 6 weeks, and Decibel Meter every 5 weeks. Most recently, SmarterNoise was updated on October 24, 2026 and Decibel Meter on October 25, 2026.

---

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