Comparison

Voice Spectrogram Logger vs YY発音分析

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Voice Spectrogram Logger

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
Read full description

1. DESPLAY The spectrogram of voice is displayed in the range of 20 - 2500Hz. You can zoom in/out the spectrogram by pinching in/out smoothly. Also landscape orientation is supported. 2. USEFUL By moving "vivid" slider, the gradation of spectrogram is controlled. The gradation is also controlled by moving "baseline" slider in "Setting" tab and selecting "Mean" or "RMS" as the way of smoothing the spectrogram out. 3. LOGGING When "log" switch is ON, this app runs in the logging mode. To choose a past log from "History" tab, you can pull it from iPhone via email as a PNG file. 4. AVAILABLE Without cellular data service, the full functions are available. The background processing is supported. 5. TECHNICAL NOTE Sample rate: 44.1kHz Bit depth: 32bit float FFT window function: Blackman FFT samples: 4096

About

YY発音分析

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
Read full description

■「YY発音分析」はこんな方にオススメです ・発音を分析したい方 ・発音を記録に取りたい方

Screenshots

Voice Spectrogram Logger4 screens
YY発音分析4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Voice Spectrogram Logger versus YY発音分析: the parameters behind the verdict, then further details
ParameterVoice Spectrogram LoggerYY発音分析
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 15 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better16.0
Further details — not scored
Size7 MB93 MB
Age rating12+4+
DeveloperYukiko Iwai株式会社エクォス・リサーチ

Customer experience

Voice Spectrogram Logger

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

YY発音分析

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Voice Spectrogram Logger

One-time1
  • Remove Ads$3.99
None

YY発音分析

No in-app purchases

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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