Finds the key and applies real-time transpose and pitch shift to YouTube audio with on-device analysis and formant correction.
Users
56
+19 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#104K
#87K among extensions
Version
1.0.3
updated 12 Sep 2026
Users
monthly, 3 months
Latest, 15 Oct 2026:56 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About moduLab – YouTube Transpose & Pitch Shift
moduLab helps musicians, singers, and learners find the key of music and apply real-time transpose and pitch shift while it plays in YouTube or YouTube Music. Tonal analysis runs entirely on your device with Sonance (LH).
Features
• Detect the tonal center, major/minor mode, confidence, an alternate result, and analyzed coverage.
• Transpose and pitch-shift audio in real time from -12 to +12 semitones.
• Preserve vocal character with optional formant correction and automatic or manual voice-base control.
• Use Bypass to pass captured audio through without pitch or formant processing.
• Pause tonal analysis during detected ads while audio processing remains active.
• Store settings and derived tonal results locally so a previous result can appear when you revisit a track.
Privacy
• Sonance (LH) analyzes audio entirely on your device.
• Selected-tab audio stays in memory during processing and is not sent to moduLab or any remote analysis service.
• moduLab does not access your microphone, require an account or Google sign-in, sell user data, or use user data for advertising.
Usage
Open a supported YouTube or YouTube Music tab and click the extension icon. Starting processing may restart the current track from the beginning for a clean analysis. While processing is active, Chrome tab capture replaces the tab’s original audio output with moduLab’s processed output.
moduLab Pro for iPhone and iPad
Practice with your own audio files using transpose, chords, lyrics, tuner, and metronome tools. View moduLab Pro on the App Store:
https://apps.apple.com/us/app/modulab-pro/id6752724025
moduLab is not affiliated with or endorsed by YouTube or Google.
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
+19
+51.4%
0
0.00
Chrome Web Store search rankings
Where moduLab – YouTube Transpose & Pitch Shift appears when people search the store, with the 30 day change