# SmarterNoise vs OpeNoise

The clearest difference is rating: SmarterNoise at 4.6 against OpeNoise's 4.0. SmarterNoise also leads on update cadence (every 6 weeks vs every 7 months) and ratings volume (115 vs 4). OpeNoise's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. SmarterNoise sells 2 one-off in-app purchases. OpeNoise asks for nothing beyond the download.

SmarterNoise holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: SmarterNoise has 115 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 75% of SmarterNoise's written reviews are positive against 86% of OpeNoise's, so the app with the better star average is not the one people write more warmly about.

SmarterNoise ships an update every 6 weeks, OpeNoise every 7 months. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | SmarterNoise | OpeNoise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (115 ratings)](https://appshunter.io/ios/app/smarternoise/id1384299042/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/openoise/id1387499991/reviews) |
| Number of ratings | **115** | 4 |
| Positive reviews | 75.0% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 27 MB | 18 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Johan Rogard](https://appshunter.io/developer/1384299041) | [Arpa Piemonte](https://appshunter.io/developer/1317255035) |

## 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 |


### OpeNoise

[App page](https://appshunter.io/ios/app/openoise/id1387499991)

This application measures real-time sound pressure levels, displaying minimum and maximum values. It offers advanced analysis like third octave and FFT, with options to save data, calibrate, and share measurements with a community. Note: it is not intended for professional use.

**Highlights:** Real-time A-weighted sound pressure level measurement, Minimum and maximum level tracking, Third octave and FFT analysis, Data saving in text file, Calibration functionality, Measurements displayed on a map, Community sharing of calibration and measurements

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

**In-app purchases:** none


## Frequently asked questions

### Is SmarterNoise free?

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

### Is OpeNoise free?

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

### Which has better reviews, SmarterNoise or OpeNoise?

SmarterNoise is rated higher. SmarterNoise averages 4.6 out of 5 from 115 ratings, while OpeNoise averages 4.0 from 4 ratings.

### Do SmarterNoise or OpeNoise have ads?

SmarterNoise shows ads; OpeNoise does not.

### Which is updated more often, SmarterNoise or OpeNoise?

SmarterNoise ships an update every 6 weeks, and OpeNoise every 7 months. Most recently, SmarterNoise was updated on October 2, 2026 and OpeNoise on September 26, 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.*