Observed arrival · 2026-08-23
PitchTester Turns Your Microphone Into a Pitch Gauge
A browser-based pitch detector that listens to singing or instruments and displays the note, frequency, and cents sharp or flat in real time.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Why it surfaced
PitchTester lets users choose a voice range and reference tuning—including 440, 442, 438, and 432 Hz—before they start singing or playing. Its YIN-based engine runs through the Web Audio API, with the site stating that microphone audio is analyzed locally rather than uploaded.
A browser-based pitch detector that listens to singing or instruments and displays the note, frequency, and cents sharp or flat in real time.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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