iPhone 스크린샷


This test can check your voice quality by variations of frequency (Jitter).

Jitter and shimmer are measures of the cycle-to-cycle variations of frequency and amplitude, respectively, which have been largely used for the description of pathological voice quality.

Higher jitter levels suggest that something is interfering with normal vocal fold vibration and the mucosal wave.

Whereas jitter is a measure of the percentage irregularity in the pitch of the vocal note, shimmer is a measure of the percentage irregularity in the amplitude of the vocal note.

새로운 기능

버전 1.0

This update is signed with Apple’s latest signing certificate. No new features are included.

평가 및 리뷰

101 + 21 GAMES ,


This app is easy to use and figure out. It tells you what to do for easy instruction. Also gives the results immediately

danacan211 ,

Potentially good, but it's a work in progress

When it asks to say a vowel, should it be long or short? Why are you asking for name and age? What does "jitter" mean? show me a picture of jitter vs. no jitter. I can't analyze the spectral result so why display it? The help just labels the controls. There is no explanation of what this app is or does.


Hyunmin Park
Health & Fitness

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese, Korean, Simplified Chinese, Traditional Chinese

연령 등급
Rated 4+
© 2016.01


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