Voice Spectrogram Logger vs Speech Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Speech Analyzer
Improve your public speaking by practicing speeches and receiving instant feedback. Analyze your pace, clarity, and filler word usage. Review full transcripts and track your progress to become a more confident speaker.
- Speak with confidence
- Learn to speak slower and clearer
- Avoid filler words
- View full speech transcripts
- Track progress over time
- Analyze pause duration
- Analyze words per minute
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Elevate your public speaking skills! * Speak with confidence * Learn to speak slower and clearer * Learn to avoid filler words like um, and, etc. * View full speech transcripts * Track your progress over time and improve on your speaking! Simply start a new speech and start speaking. When you are done with your speech, tap the “Stop Recording” button to end the speech. Immediately see statistics on your speech for pause duration, words per minute and word count. You can also view the full transcript of the speech to review the speech.
Screenshots
Verdict
The clearest difference is review sentiment: Speech Analyzer at 100% against Voice Spectrogram Logger's 0%. Speech Analyzer also leads on rating (3.3 vs 1.0) and update cadence (every 2 months vs every 15 months). Voice Spectrogram Logger's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases 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
Both are free to download. Voice Spectrogram Logger sells 1 one-off in-app purchase and Speech Analyzer sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Speech Analyzer holds the better App Store score, 3.3 against 1.0. That said, the two scores are not equally well evidenced: Speech Analyzer has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Voice Spectrogram Logger's written reviews are positive against 100% of Speech Analyzer's.
Voice Spectrogram Logger ships an update every 15 months, Speech Analyzer every 2 months. The most recent releases landed on October 2, 2026 and September 25, 2026 respectively.
| Parameter | Voice Spectrogram Logger | Speech Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 3.3 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 15 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | Yukiko Iwai | Murphy Brantley |
Customer experience
Voice Spectrogram Logger
Speech Analyzer
In-app purchases
Voice Spectrogram Logger
- Remove Ads$3.99
Speech Analyzer
- Unlimited Speech Storage$2.99
- Full Word Count$2.99
- Unlimited Speech Duration$2.99
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- Unlock Everything$4.99
Questions
Is Voice Spectrogram Logger free?
Is Speech Analyzer free?
Which has better reviews, Voice Spectrogram Logger or Speech Analyzer?
Do Voice Spectrogram Logger or Speech Analyzer have ads?
Which is updated more often, Voice Spectrogram Logger or Speech Analyzer?
Other comparisons
