Features & Capabilities

Analyze a 5-second sustained vowel to visualize health trends from subtle variations in vocal fold vibration.

Measures 6 acoustic parameters based on peer-reviewed research in speech pathology and psychoacoustics.

Parameters:

  • F0 (Fundamental Frequency) [Titze 1994]
  • Jitter — neuromuscular stability index [Baken & Orlikoff 2000]
  • Shimmer — vocal fold symmetry and closure [Baken & Orlikoff 2000]
  • HNR (Harmonics-to-Noise Ratio) [Yumoto et al. 1982]
  • CPP (Cepstral Peak Prominence) [Hillenbrand et al. 1994]
  • Alpha Ratio [Laukkanen et al. 1997]

Features:

  • Instant analysis from 5 seconds of voice
  • 3-axis scoring: Stress, Fatigue, Stability
  • Daily trend charts
  • Full parameter references

Not a medical device. Results are for reference only.

User Growth & Download Statistics

App
By:
satoshi amasaki
Version:
1.0 Last updated: 2026-05-26
Version code:
886104140
Creation date:
2026-05-26
Compatible devices:
Size:
2.47MB
Price:
50
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-06
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
satoshi amasaki
Apple Apps Store
https://apps.apple.com/jp/app/%E3%83%9C%E3%82%A4%E3%82%B9%E3%83%90%E3%82%A4%E3%82%BF%E3%83%AB/id6772985032?l=en-US
Website:
https://snarfnet.github.io/

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