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Tempo Kit – Metronome, Tuner, Drone, Practice Journal, YouTube Speed, Loops

Chrome extension by Crescendo Companion · Productivity · Tools

  • Established publisher
  • Trader

A Chrome extension in Productivity · Tools with 130 users, barely installed.

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
130
Rating
5.0 (7 ratings)
Users, last 13 days
+37
Rating, last 30 days
Not watched long enough to say
Version
1.2.0
Updated in the store
2026-09-03
Published
2026-06-27
Manifest
V3
Browser access
9 permissions, 4 site patterns

How it has moved

Users
+37 since 04.09
91-130 · 9 readings
2026-09-04: appeared in the store
  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. 2026-09-16130
Rating
unchanged since 04.09
reviewsrating 5.00 · 9 readings
2026-09-04: appeared in the store
  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. 2026-09-16reviews7rating5.00
Users
+37 since 04.09
91-130 · 9 readings
2026-09-04: appeared in the store
  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. 2026-09-16130
Rating
unchanged since 04.09
reviewsrating 5.00 · 9 readings
2026-09-04: appeared in the store
  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. 2026-09-16reviews7rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once 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

What changed recently

  1. Appeared in the store

The publisher

Crescendo Companion publishes 2 listings we track, 138 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 8 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 13 users
  2. Practice Hero Describes nearly the same job, smaller audience 34 users ★ 5.0
  3. Metronome Describes nearly the same job, smaller audience 3k users ★ 3.7
  4. Etudely — Music Practice Player Describes nearly the same job, smaller audience 5 users
  5. Musician's Metronome Describes nearly the same job, smaller audience 190 users ★ 5.0

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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.