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Tempo Kit – Metronome, Tuner, Video Transpose & Practice

Chrome extension by Crescendo Companion · Productivity · Tools

  • Established publisher
  • Trader

A Chrome extension in Productivity · Tools with 320 users, barely installed. Audience over the last 30 days: +85.

Specific sites only: 4 match patterns.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
320
Rating
5.0 (7 ratings)
Users, last 30 days
+85
Rating, last 30 days
Steady over 30 days
Version
2.0.0
Updated in the store
2026-09-30
Published
2026-06-27
Manifest
V3
Browser access
9 permissions, 4 site patterns

How it has moved

Users
+96 since 15.10
224-320 · 17 readings
  1. 2026-10-16236
  2. 2026-10-18242
  3. 2026-10-21251
  4. 2026-10-22257
  5. 2026-10-23268
  6. 2026-10-24265
  7. 2026-10-25267
  8. 2026-10-27266
  9. 2026-10-29272
  10. 2026-11-01284
  11. 2026-11-03295
  12. 2026-11-05299
  13. 2026-11-07296
  14. 2026-11-08298
  15. 2026-11-09301
  16. 2026-11-10309
  17. 2026-11-14320
Rating
unchanged since 15.10
reviewsrating 5.00 · 17 readings
  1. 2026-10-16reviews7rating5.00
  2. 2026-10-18reviews7rating5.00
  3. 2026-10-21reviews7rating5.00
  4. 2026-10-22reviews7rating5.00
  5. 2026-10-23reviews7rating5.00
  6. 2026-10-24reviews7rating5.00
  7. 2026-10-25reviews7rating5.00
  8. 2026-10-27reviews7rating5.00
  9. 2026-10-29reviews7rating5.00
  10. 2026-11-01reviews7rating5.00
  11. 2026-11-03reviews7rating5.00
  12. 2026-11-05reviews7rating5.00
  13. 2026-11-07reviews7rating5.00
  14. 2026-11-08reviews7rating5.00
  15. 2026-11-09reviews7rating5.00
  16. 2026-11-10reviews7rating5.00
  17. 2026-11-14reviews7rating5.00
Users
+227 since 04.09
91-320 · 35 readings
2026-09-04: appeared in the store2026-09-30: released 2.0.02026-09-30: gained the good publisher record badge
  1. 2026-09-0493appeared in the store
  2. 2026-09-0591
  3. 2026-09-0793
  4. 2026-09-0895
  5. 2026-09-0997
  6. 2026-09-10102
  7. 2026-09-13124
  8. 2026-09-15130
  9. 2026-09-17144
  10. 2026-09-20153
  11. 2026-09-21155
  12. 2026-09-25170
  13. 2026-09-27171
  14. 2026-09-28173
  15. 2026-10-04204
  16. 2026-10-08209
  17. 2026-10-09217
  18. 2026-10-10224
  19. 2026-10-16236
  20. 2026-10-18242
  21. 2026-10-21251
  22. 2026-10-22257
  23. 2026-10-23268
  24. 2026-10-24265
  25. 2026-10-25267
  26. 2026-10-27266
  27. 2026-10-29272
  28. 2026-11-01284
  29. 2026-11-03295
  30. 2026-11-05299
  31. 2026-11-07296
  32. 2026-11-08298
  33. 2026-11-09301
  34. 2026-11-10309
  35. 2026-11-14320
Rating
unchanged since 04.09
reviewsrating 5.00 · 35 readings
2026-09-04: appeared in the store2026-09-30: released 2.0.02026-09-30: gained the good publisher record badge
  1. 2026-09-04reviews7rating5.00appeared in the store
  2. 2026-09-05reviews7rating5.00
  3. 2026-09-07reviews7rating5.00
  4. 2026-09-08reviews7rating5.00
  5. 2026-09-09reviews7rating5.00
  6. 2026-09-10reviews7rating5.00
  7. 2026-09-13reviews7rating5.00
  8. 2026-09-15reviews7rating5.00
  9. 2026-09-17reviews7rating5.00
  10. 2026-09-20reviews7rating5.00
  11. 2026-09-21reviews7rating5.00
  12. 2026-09-25reviews7rating5.00
  13. 2026-09-27reviews7rating5.00
  14. 2026-09-28reviews7rating5.00
  15. 2026-10-04reviews7rating5.00
  16. 2026-10-08reviews7rating5.00
  17. 2026-10-09reviews7rating5.00
  18. 2026-10-10reviews7rating5.00
  19. 2026-10-16reviews7rating5.00
  20. 2026-10-18reviews7rating5.00
  21. 2026-10-21reviews7rating5.00
  22. 2026-10-22reviews7rating5.00
  23. 2026-10-23reviews7rating5.00
  24. 2026-10-24reviews7rating5.00
  25. 2026-10-25reviews7rating5.00
  26. 2026-10-27reviews7rating5.00
  27. 2026-10-29reviews7rating5.00
  28. 2026-11-01reviews7rating5.00
  29. 2026-11-03reviews7rating5.00
  30. 2026-11-05reviews7rating5.00
  31. 2026-11-07reviews7rating5.00
  32. 2026-11-08reviews7rating5.00
  33. 2026-11-09reviews7rating5.00
  34. 2026-11-10reviews7rating5.00
  35. 2026-11-14reviews7rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 4 match patterns.

  • *://*.youtube.com/*
  • *://*.bilibili.com/*
  • https://www.tempokit.net/*
Show the remaining 1
  • https://tempo-kit.vercel.app/*
  • Capture the contents of a tab tabCapture
  • See the address and title of every tab you have open tabs
  • Run its own code on the pages it can access scripting
Show the remaining 6
  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
  • Run work in a hidden page offscreen
  • Open a panel beside the page sidePanel
  • Store data in your browser storage
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

Version history

  1. Version 2.0.0

What changed recently

  1. Package size changed
  2. Store description rewritten
  3. Gained the Established publisher badge
Show the remaining 3
  1. Renamed from "Tempo Kit – Metronome, Tuner, Drone, Practice Journal, YouTube Speed, Loops" to "Tempo Kit – Metronome, Tuner, Video Transpose & Practice"
  2. Released version 2.0.0 (was 1.2.0)
  3. Appeared in the store

The publisher

Crescendo Companion publishes 2 listings we track, 369 users between them. Listed website: tempokit.net.

  1. Note Pierce — Ear Training: Intervals, Chords, Scales, Progressions, Rhythm Crescendo Companion · Productivity · Tools · published 2026-08-26 49 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. Tempokit — Metronome, Tuner & Practice Studio Describes nearly the same job, smaller audience 51 users
  2. Metronome Describes nearly the same job, smaller audience 3k users ★ 3.7
  3. Etudely — Music Practice Player Describes nearly the same job, smaller audience 3 users (last published figure)
  4. GuitarApp - Metronome Describes nearly the same job, smaller audience 3k users ★ 5.0
  5. Backbeat Describes nearly the same job, smaller audience 14 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/nhakclpaaelpoioipaegldlcidmdfkgf/badge.svg)](https://extops.dev/extensions/nhakclpaaelpoioipaegldlcidmdfkgf)

HTML

<a href="https://extops.dev/extensions/nhakclpaaelpoioipaegldlcidmdfkgf"><img src="https://extops.dev/extensions/nhakclpaaelpoioipaegldlcidmdfkgf/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-14. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built