Tempo Kit – Metronome, Tuner, Loop, Transpose & Video Practice Studio

Music practice side panel: metronome, tuner, timer, library, notes, presets + YouTube speed, transpose, A-B loops & BPM detection.

Music practice side panel: metronome, tuner, timer, library, setlists, notes, presets + YouTube speed, transpose, A-B loops, KEY/BPM detection & more. Tempo Kit. Less switching. Less setup. More playing. Turn your browser into a focused music practice station. Practice smarter and more efficiently. Whether you're learning a new solo on YouTube, running timing drills, looping a section, working through a set list, or shredding to local audio files, everything you need docks right next to your work. FREE CORE TOOLS: • Metronome: 30–600 BPM, tap tempo, subdivisions, 9 click sounds from classic click to cowbell, and visual flashes. Master volume control. Mini metronome controls — now with tap tempo — let you keep the BPM running while you work in other tabs. • Chromatic Tuner: Real-time pitch detection from your microphone, processed locally in your browser. Set your A4 reference anywhere from 415 to 466 Hz, and pull up standard tunings for your instrument right from the tuner tab. • Timer & Stopwatch: Run timed focus blocks by piece or technique, time individual sections, and track laps. • Practice Libraries: Save up to 3 presets and drag to reorder them. Keep notes that save on their own — one tap, done. Save a new preset or update the one you're on without losing your place, then export/import a full backup anytime. • Set Lists: Line up your presets and move through them with prev / next — right from the Metronome, Timer, Stopwatch, and Video pages. Perfect for running a song list or lesson plan in order. • Daily Greeting & Streak: A friendly hello when you open Tempo Kit, plus a no-guilt practice streak — miss a day and it pauses instead of resetting. Pick from six streak styles that grow as your practice does. PRO FEATURES (Tempo Kit Pro): Unlock full video practice controls, sound shaping, and a larger practice library. • Video Practice Controls: Slow down, transpose, loop, and analyze from the side panel. Mini video controls let you change speed and transpose while you work in other tabs. • Speed Control: Adjust playback from 0.1x to 3x without changing pitch. • Transpose: Shift pitch from -12 to +12 semitones without changing speed. • 5-Band EQ: Shape the sound of what you're practicing — boost the part you're learning or cut what's in the way, with one-tap presets like Hear bass and Hear melody. • Vocals Slider: Turn vocals down for karaoke-style practice, or up to bring the melody line forward. • A-B Loops: Isolate difficult sections and repeat them until they feel clean. Copy any loop in one click, and search your saved loops as the list grows. • BPM Detection: Automatically detect the tempo of the connected video or audio. • Key Detection: Automatically detect a video's musical key, so you know what to play over before you start. • Tempo Ramp: Set a start and target tempo and let the metronome step you up automatically, so speed builds gradually instead of slamming into a wall. Save the whole ramp inside a preset. • Polyrhythm: Layer a second rhythm over the beat — 3 against 4, 2 against 3, anything up to 16 — with its own sound and tap-to-accent levels. Both rhythm rows stay time-aligned on screen, so you can see exactly where the beats land. • Count-In: A lead-in count before the metronome or video starts, so you're locked in by beat one. • Expanded Library: Save 300+ presets, organize them into folders, and save video practice profiles. Search and drag to reorder so a big library stays easy to navigate. WORKS WHERE YOU PRACTICE Tempo Kit works with YouTube and Bilibili out of the box. Using tab capture, "Use this tab" connects the practice tools — transpose, EQ, and vocals — to almost any music or video site you choose. You can also practice with local audio or video files in the Tempo Kit Website Practice Player. Other standard media and audio players will work when the site and browser allow extension control. LOCAL-FIRST & PRIVATE: Tempo Kit is built to be fast and private. The metronome, tuner, timer, stopwatch, video tools, EQ and vocal processing, and BPM/Key analysis run entirely locally on your device. Audio is never recorded or uploaded. We do not use analytics, tracking cookies, or advertising. Your practice libraries stay in your browser's local storage. Payments are handled securely by ExtensionPay and Stripe.