# Voice Spectrogram Logger vs Audio Narrowband Filter

The clearest difference is price: Voice Spectrogram Logger at Free against Audio Narrowband Filter's $5.99. Audio Narrowband Filter's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 15.5). On ads and device support there is nothing between them.

Voice Spectrogram Logger is free to download; Audio Narrowband Filter costs $5.99 up front. Voice Spectrogram Logger sells 1 one-off in-app purchase. Audio Narrowband Filter asks for nothing beyond the download.

## The numbers

| Metric | Voice Spectrogram Logger | Audio Narrowband Filter |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/voice-spectrogram-logger/id1277134462/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 15 months | — |
| Monetization | Free | — |
| Size | 7 MB | 2 MB |
| Requires iOS | 15.5 | **13** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yukiko Iwai](https://appshunter.io/developer/965630131) | [Real-Time Specialties](https://appshunter.io/developer/335568332) |

## What reviewers say

### Voice Spectrogram Logger

[App page](https://appshunter.io/ios/app/voice-spectrogram-logger/id1277134462)

Visualize voice frequencies in a spectrogram from 20-2500Hz. Adjust display with sliders and log recordings to export as PNG files. Functions fully offline and supports background processing.

**Highlights:** Real-time voice spectrogram display, Adjustable frequency range (20-2500Hz), Zoomable spectrogram with pinch gestures, Customizable spectrogram gradation, Logging mode with history export, Offline functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### Audio Narrowband Filter

[App page](https://appshunter.io/ios/app/audio-narrowband-filter/id6748972323)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Voice Spectrogram Logger free?

Voice Spectrogram Logger is free to download, with in-app purchases available.

### Is Audio Narrowband Filter free?

Audio Narrowband Filter costs $5.99, with no in-app purchases.

### Do Voice Spectrogram Logger or Audio Narrowband Filter have ads?

Neither Voice Spectrogram Logger nor Audio Narrowband Filter shows ads.

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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.*