# SmarterNoise Pro vs DSP MASTER

The clearest difference is in-app purchases: DSP MASTER at none against SmarterNoise Pro's 4. DSP MASTER also leads on iOS requirement (9.0 vs 12.0). SmarterNoise Pro's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. SmarterNoise Pro sells 4 one-off in-app purchases. DSP MASTER asks for nothing beyond the download.

SmarterNoise Pro ships an update monthly, DSP MASTER every 4 months. The most recent releases landed on September 7, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | SmarterNoise Pro | DSP MASTER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/smarternoise-pro/id1466745030/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 6 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Johan Rogard](https://appshunter.io/developer/1384299041) | [Audio Design](https://appshunter.io/developer/1579008816) |

## 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 |


### DSP MASTER

[App page](https://appshunter.io/ios/app/dsp-master/id6502436875)

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

**In-app purchases:** none


## Frequently asked questions

### Is SmarterNoise Pro free?

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

### Is DSP MASTER free?

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

### Do SmarterNoise Pro or DSP MASTER have ads?

Neither SmarterNoise Pro nor DSP MASTER shows ads.

### Which is updated more often, SmarterNoise Pro or DSP MASTER?

SmarterNoise Pro ships an update monthly, and DSP MASTER every 4 months. Most recently, SmarterNoise Pro was updated on September 7, 2026 and DSP MASTER on September 17, 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.*