Extension Tracker

HzDetect - A4 Tuning Analyzer

438 users Rated 2.33 from 3 ratings Last updated 29 Oct 2026

By SYQEL INC Live in the Chrome Web Store mcfcnidfiaabocadclelobkfnhcjeibj Search Google ↗ Last checked 29 Oct 2026, 05:52 UTC

The listing

What the Chrome Web Store shows, as of the last check

Measure the exact A4 tuning of any tab or your system audio — 440 Hz (concert pitch), 432 Hz or a Solfeggio frequency.Summary from the listing
Developer
SYQEL INC
Enhanced Safe Browsing
Trusted. What this means →
Category
Lifestyle › Well-being
First published
3 Nov 2025
Last updated
29 Oct 2026
Version
2.0.2
Size
103 KiB
Minimum Chrome
88
Languages
1 language

English

Website
hzdetect.com
Support page
https://hzdetect.com/
See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
400420Tracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct25 Oct2026-09-27: 396 users2026-10-14: 421 users2026-10-29: 438 users2026-10-29: new version438400420Tracking began27 Sep11 Oct25 Oct2026-09-27: 396 users2026-10-14: 421 users2026-10-29: 438 users2026-10-29: new version438
Average rating
2.302.4027 Sep11 Oct25 Oct2.332.302.4027 Sep11 Oct25 Oct2.33
Number of ratings
327 Sep11 Oct25 Oct3327 Sep11 Oct25 Oct3
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-10-294382.333
2026-10-144212.333
2026-09-273962.333
Users, 7 days
No change
since a week ago
Users, 30 days
+17
+4.0%
Rank
#36,479
by users, of 292,125 extensions
In its category
#106
of 3,146 in Well-being

What changed

Every change found on a check, newest first

  1. New version 2.0.2, replacing 1.0.1.

    Renamed from “HZ Detect - A4 Tuning Analyzer” to “HzDetect - A4 Tuning Analyzer”.

    The summary on the listing changed.

    Added the permissions desktopCapture, offscreen, storage. Removed the permission scripting.

    Removed the site <all_urls>.

    Removed the sites where it runs scripts *://*.soundcloud.com/*, *://*.spotify.com/*, *://*.youtube.com/*, *://music.youtube.com/*, <all_urls>.

    The privacy policy link changed.

Developer history

Moves to another publisher account and new contact emails, newest first

No move to another account and no new contact email since tracking began on 27 Sep 2026.

We know contact emails only by a keyed hash, so they're never shown. Recent account and contact changes →

What it can access

From the extension's manifest, in plain language

Browser features
  • activeTabThe tab you're on, only after you click the extension
  • desktopCaptureCapture your screen
  • offscreenOpen a hidden page for background work
  • storageSave settings and data in your browser
  • tabCaptureCapture video and sound from tabs

More from this developer

Other extensions from the same publisher account

ExtensionUsersRatingRatingsCategory
Music ReTuner™863 4.0812 Well-being
YouTube™ Binaural Retuner69 5.001 Well-being
All 3 extensions by SYQEL INC →

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 29 Oct 2026, 05:52 UTC; next check around 1 Dec 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “HzDetect - A4 Tuning Analyzer” (mcfcnidfiaabocadclelobkfnhcjeibj). Chrome Web Store data, last checked 2026-10-29. https://extensiontracker.com/extension/mcfcnidfiaabocadclelobkfnhcjeibj. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_mcfcnidfiaabocadclelobkfnhcjeibj,
  title   = {HzDetect - A4 Tuning Analyzer (mcfcnidfiaabocadclelobkfnhcjeibj)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-10-29},
  url     = {https://extensiontracker.com/extension/mcfcnidfiaabocadclelobkfnhcjeibj},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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