Voice Spectrogram Logger vs Estill Exercises
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
Read full descriptionHide 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
Estill Exercises
Master vocal techniques with guided exercises and expert instruction. Track your progress, review study materials in multiple languages, and connect with a community of learners. Perfect for both beginners and experienced users looking to refine their voice.
- Personalized user center with notes and bookmarks
- Study materials in 6 languages
- Expert-guided video lessons
- Progress tracking and practice logging
- Audio training exercises
- Interactive flashcards for exam prep
- Attractor state check-in
Read full descriptionHide full description
Estill Voice Training, the leader in voice training and rehabilitation across the globe, comes to the palm of your hand! Train your voice anytime and anywhere. Estill Exercise features: User Center: Take control of your learning journey with our brand new personalized user center featuring notes, bookmarks, and more! Review Estill Figures and Qualities: Our EVT study materials are now in 6 languages and with a fresh look. Train with Estill Experts: Master Estill Figures and Qualities with expert guidance from certified Estill trainers through engaging videos and targeted exercises. Practicebook: Keep track of your progress and log all your practice sessions with our convenient Practicebook feature. Audio Training Exercises: Turn your Figures into Artistry Action with weekly Audio Training Exercises. Compete & Connect: Level up your knowledge, earn badges, and connect with fellow learners. Estill Etudes Accompaniment: Need help with Estill Etudes? These fun melodies were created to accompany the melodic exercises in the book. Flash Cards: Ace your exam preparation with our interactive flashcards for targeted practice. Attractor State Check-in: Check-in with your voice before jumping into more challenging vocal exercises, or track your Attractor State on your audition day! Whether you’re new to Estill Voice Training® and want to start using our unique and powerful system for training your voice or have used Estill for decades and want a way to practice and keep your voice in shape, Estill Exercises helps you achieve your vocal goals! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Estill Exercises at 5.0 against Voice Spectrogram Logger's 1.0. Estill Exercises also leads on review sentiment (38% vs 0%) and update cadence (every 6 weeks vs every 15 months). Voice Spectrogram Logger's advantage is monetization model (free vs subscription). On price, ratings volume, ads and in-app purchases 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 Estill Exercises sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Estill Exercises holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 0% of Voice Spectrogram Logger's written reviews are positive against 38% of Estill Exercises's.
Voice Spectrogram Logger ships an update every 15 months, Estill Exercises every 6 weeks. The most recent releases landed on July 29, 2026 and September 13, 2026 respectively.
| Parameter | Voice Spectrogram Logger | Estill Exercises |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 37.5% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 15 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 14.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 16 MB |
| Age rating | 12+ | 4+ |
| Developer | Yukiko Iwai | Estill Voice International, LLC |
Customer experience
Voice Spectrogram Logger
Estill Exercises
In-app purchases
Voice Spectrogram Logger
- Remove Ads$3.99
Estill Exercises
- Estill Exercises Monthly3 Days trial$9.991 Month
Questions
Is Voice Spectrogram Logger free?
Is Estill Exercises free?
Which has better reviews, Voice Spectrogram Logger or Estill Exercises?
Do Voice Spectrogram Logger or Estill Exercises have ads?
Which is updated more often, Voice Spectrogram Logger or Estill Exercises?
Other comparisons
