Tempo Kit — Music Practice Tools in Your Browser Side Panel

For Chrome, Edge, Brave, and Chromium-based browsers<br>Your practice room,<br>docked in the browser.<br>Metronome, tuner, timer, stopwatch, library, notes, and video practice controls in one tidy side panel — right next to whatever you're learning. Less setup, more playing.<br>Add Tempo Kit — FreeSee it in action<br>Free core toolsOne side panelLocal-first tools

Tuner

Stopwatch

Timer

Metronome

Videos

Library

Tempo Kit<br>6-in-1 side panel

MetronomeChromatic TunerTimer & StopwatchYouTube PracticeBilibili PracticeAudio/Video PracticeLocal FilesA–B LoopsPitch TransposeSpeed ControlBPM DetectionPreset LibrarySet ListsPractice NotesMetronomeChromatic TunerTimer & StopwatchYouTube PracticeBilibili PracticeAudio/Video PracticeLocal FilesA–B LoopsPitch TransposeSpeed ControlBPM DetectionPreset LibrarySet ListsPractice Notes

Built for the way<br>musicians actually practice<br>Every practice tool in the side panel. Keep playing. Keep focused.

Metronome + TunerFREE<br>Keep steady time.<br>Stay in tune.<br>A full metronome — 30 to 600 BPM, tap tempo, subdivisions, swing — plus a real-time chromatic tuner that reads your mic and shows note, cents, and Hz. Audio is processed on your device.<br>Tap tempo, swing feel, per-beat volume, 9 click sounds<br>Precount, tempo ramp & polyrhythm layer<br>Note, octave, cents & Hz — A4 reference 415–466 Hz<br>Mic audio processed locally — never recorded

Video PracticePRO<br>Slow it down.<br>Loop it. Nail it.<br>Works on YouTube and Bilibili out of the box — or connect almost any music tab, including Spotify and Apple Music on the web. Slow down a passage, transpose the pitch, shape the mix with a 5-band EQ, pull the vocals down, mark an A–B loop, and run BPM & key detection — all from the side panel.<br>Speed 0.1×–3×, pitch ±12 semitones<br>5-band EQ + vocal reduce or boost<br>A–B loop markers and BPM & Key detection<br>YouTube, Bilibili, your own files — or any tab you connect

Practice Libraries + NotesFREEPRO<br>Save your setup.<br>Pick up where you left off.<br>Save any combination — tempo, video, speed, pitch, loop, notes — as a named preset. Line them up in a set list and switch presets from any page. Pin notes across tabs to track what you're practicing. Reload in one click, export your libraries as a backup.<br>3 presets free · 300+ with Pro + folders<br>Set lists & drag-to-reorder<br>Pinned practice notes per preset<br>Export & import as a backup file

Features<br>All tools, free and Pro, at a glance.

Metronome

Tap Tempo

Different Sounds

Precount

Tempo Ramp

Polyrhythm

Daily Streak

Chromatic Tuner

Libraries

Save / Load Preset

Set Lists

Drag to Reorder

Pinned Notes

Import / Export

Video Practice

Speed Control

Pitch Transpose

A–B Loop

BPM & Key Detection

5-Band EQ

Vocal Reduce

Connect Any Tab

A4 Calibration

Local Files

Stopwatch + Laps

Mini Tools

Countdown Timer

Multiple Languages

Light & Dark Theme

Privacy-First

Free to start. Unlock video tools and the Libraries tab.<br>Start with the metronome, tuner, timer, and stopwatch. Upgrade to Pro for video practice controls and the full Libraries tab.

Free$0no account<br>Add free<br>ProMonthly<br>$4.99

Most popularYearly<br>$38.99<br>~35% off

Best valueLifetime<br>$129.99<br>Pay Once

Get Pro

Metronome (BPM, tap tempo, subdivisions)

Chromatic tuner

Timer & stopwatch

Mini control drawers<br>Metronome<br>Metronome + Videos

Saved presets<br>3 presets<br>300+ presets

Show all 19 features

FAQ<br>Frequently asked questions<br>Full setup help and docs also available on the Support page.

Is Tempo Kit really free?Yes. The metronome (with 9 click sounds and a no-guilt daily practice streak), chromatic tuner, countdown timer, and stopwatch are free core tools — no account needed. Pro unlocks video practice tools (speed, pitch, 5-band EQ, vocal reduce, A-B loop, BPM & key detection) for YouTube, Bilibili, your own files, and almost any music tab you connect — including Spotify and Apple Music on the web — plus polyrhythm layering, 300+ saved presets, and folder organization. Practice notes, set lists with quick preset switching, drag-to-reorder, and one-click export/import of libraries work on every plan too.<br>What can I practice with?Video practice works with YouTube and Bilibili out of the box — they are the tested, supported sources. You can also practice with your own audio or video files in the Practice Player, or connect another standard web player when the site allows browser extension control. Use one connected video at a time.<br>When does Pro activate after I buy it?Tempo Kit checks your ExtensionPay status when the extension opens and when you return from checkout. If Pro does not appear immediately, close and reopen the extension. If it still shows as free, open Settings and choose Restore Pro. ExtensionPay will ask for the purchase email on its own secure page.<br>Does Tempo Kit record my audio?No. The tuner uses your microphone for real-time pitch detection only — audio is processed locally in your browser and never recorded, stored, or sent anywhere. BPM...