# Sound Level & Spectrogram vs SpectralScan Audio Analyzer

The clearest difference is in-app purchases: Sound Level & Spectrogram at none against SpectralScan Audio Analyzer's 1. SpectralScan Audio Analyzer's advantage is ads (none vs shown) and update cadence (every 8 days vs every 5 months). On price there is nothing between them.

Both are free to download. SpectralScan Audio Analyzer sells 1 one-off in-app purchase. Sound Level & Spectrogram asks for nothing beyond the download.

Sound Level & Spectrogram ships an update every 5 months, SpectralScan Audio Analyzer every 8 days. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Sound Level & Spectrogram | SpectralScan Audio Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/spectralscan-audio-analyzer/id6762024331/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 8 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 4 MB | 16 MB |
| Requires iOS | 18.7 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [Otsukare AB](https://appshunter.io/developer/1892516192) |

## What reviewers say

### Sound Level & Spectrogram

[App page](https://appshunter.io/ios/app/sound-level-and-spectrogram/id6503722682)

Measure sound levels in decibels and visualize sound frequencies with a real-time spectrogram. Understand your environment's noise and protect your health. Offers advanced settings for accurate acoustic analysis.

**Highlights:** Sound level measurement (dB), Real-time spectrogram analysis, Frequency weighting correction (A, C, Z), Time weighting characteristics (Fast, Slow), Time course graph, Environmental noise measurement

**In-app purchases:** none


### SpectralScan Audio Analyzer

[App page](https://appshunter.io/ios/app/spectralscan-audio-analyzer/id6762024331)

Transform your device into a professional audio analysis tool. Visualize sound in real-time with a high-resolution spectrum, perform precise sine sweep measurements, and analyze frequency content over time. Save, compare, and export your audio data.

**Highlights:** Real-time frequency spectrum visualization, Sine sweep measurements for system response, Spectrogram for time-frequency analysis, Comparison and overlay of multiple measurements, Export data as CSV or PNG, Pro features for advanced analysis

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectralScan Pro | $9.99 | one-time |


## Frequently asked questions

### Is Sound Level & Spectrogram free?

Sound Level & Spectrogram is free to download, with no in-app purchases.

### Is SpectralScan Audio Analyzer free?

SpectralScan Audio Analyzer is free to download, with in-app purchases available.

### Do Sound Level & Spectrogram or SpectralScan Audio Analyzer have ads?

Sound Level & Spectrogram shows ads; SpectralScan Audio Analyzer does not.

### Which is updated more often, Sound Level & Spectrogram or SpectralScan Audio Analyzer?

Sound Level & Spectrogram ships an update every 5 months, and SpectralScan Audio Analyzer every 8 days. Most recently, Sound Level & Spectrogram was updated on September 18, 2026 and SpectralScan Audio Analyzer on September 9, 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.*