# Voice Spectrogram Logger vs YY発音分析

The clearest difference is review sentiment: YY発音分析 at 100% against Voice Spectrogram Logger's 0%. YY発音分析 also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 15 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Voice Spectrogram Logger sells 1 one-off in-app purchase. YY発音分析 asks for nothing beyond the download.

Voice Spectrogram Logger ships an update every 15 months, YY発音分析 weekly. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Voice Spectrogram Logger | YY発音分析 |
| --- | --- | --- |
| Price | Free | Free |
| 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 | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | Free | Free |
| Size | 7 MB | 93 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Yukiko Iwai](https://appshunter.io/developer/965630131) | [株式会社エクォス・リサーチ](https://appshunter.io/developer/1483010608) |

## 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 |


### YY発音分析

[App page](https://appshunter.io/ios/app/yy/id6478858570)

This app helps users analyze and record their pronunciation. It's designed for individuals looking to improve their speaking accuracy and track their progress over time.

**Highlights:** Pronunciation analysis, Speech recording, Progress tracking, User-friendly interface

**Features:** macOS Compatibility, 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 YY発音分析 free?

YY発音分析 is free to download, with no in-app purchases.

### Do Voice Spectrogram Logger or YY発音分析 have ads?

Neither Voice Spectrogram Logger nor YY発音分析 shows ads.

### Which is updated more often, Voice Spectrogram Logger or YY発音分析?

Voice Spectrogram Logger ships an update every 15 months, and YY発音分析 weekly. Most recently, Voice Spectrogram Logger was updated on October 20, 2026 and YY発音分析 on October 10, 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.*