# Simple Noise Meter vs Decibel Reader

The clearest difference is rating: Decibel Reader at 4.5 against Simple Noise Meter's 4.0. Decibel Reader also leads on update cadence (every 2 weeks vs every 2 months) and review sentiment (80% vs 57%). Simple Noise Meter's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Simple Noise Meter sells 2 one-off in-app purchases and Decibel Reader sells 6 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Decibel Reader holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Decibel Reader has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 57% of Simple Noise Meter's written reviews are positive against 80% of Decibel Reader's.

Simple Noise Meter ships an update every 2 months, Decibel Reader every 2 weeks. The most recent releases landed on August 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Simple Noise Meter | Decibel Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/simple-noise-meter/id1630705039/reviews) | **[4.5 (24 ratings)](https://appshunter.io/ios/app/decibel-reader/id6451411046/reviews)** |
| Number of ratings | 1 | **24** |
| Positive reviews | 57.1% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 42 MB | 12 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NAOYA ONO](https://appshunter.io/developer/1530328146) | [Andy Sutanto](https://appshunter.io/developer/1659282966) |

## What reviewers say

### Simple Noise Meter

[App page](https://appshunter.io/ios/app/simple-noise-meter/id1630705039)

Measure ambient sound levels in decibels with this straightforward utility. It provides a simple interface to start, stop, and reset noise measurements, offering a supplementary tool for understanding your environment's acoustics.

**Highlights:** Real-time decibel measurement, Start, stop, and reset functions, Calibration for accuracy, Supplementary measurement tool, Easy-to-use interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Developer | $0.99 | one-time |
| Remove ads | $3.99 | one-time |


### Decibel Reader

[App page](https://appshunter.io/ios/app/decibel-reader/id6451411046)

Measure ambient noise levels with real-time readings, tracking minimum, average, and maximum decibels. Offers calibration for accuracy and a dark mode for comfortable viewing. This tool helps you understand your sound environment.

**Highlights:** Real-time decibel measurement, Calibration for accuracy, Track min, average, and max noise levels, Dark mode for low-light use, Simple and intuitive interface

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter Pro - 1 Week | $3.99 | per 7 days |
| Decibel Meter Pro - 1 Month | $7.99 | per month |
| Sound Level Meter - 6 Months | $19.99 | per 6 months |
| Noise Level Meter - 1 Year | $29.99 | per year |
| Decibel Meter Pro - 1Y 2 | $29.99 | per year |
| dB Meter Pro | $49.99 | one-time |


## Frequently asked questions

### Is Simple Noise Meter free?

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

### Is Decibel Reader free?

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

### Which has better reviews, Simple Noise Meter or Decibel Reader?

Decibel Reader is rated higher. Simple Noise Meter averages 4.0 out of 5 from 1 ratings, while Decibel Reader averages 4.5 from 24 ratings.

### Do Simple Noise Meter or Decibel Reader have ads?

Both Simple Noise Meter and Decibel Reader show ads.

### Which is updated more often, Simple Noise Meter or Decibel Reader?

Simple Noise Meter ships an update every 2 months, and Decibel Reader every 2 weeks. Most recently, Simple Noise Meter was updated on August 14, 2026 and Decibel Reader on September 18, 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.*