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A quick way to understand who this helps, what it solves, and where it connects next.
Musicians practicing to a steady tempo.
Using the online metronome without installing anything or signing up.
Capture metronome intent with a fast, browser-side tool that runs 100% locally.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
This online metronome uses the Web Audio API to schedule precise oscillator clicks, so the beat stays accurate even when your tab is busy. Set the tempo with the slider or type an exact BPM, choose how many beats are in each bar, and press start. The first beat of every bar is accented and shown in blue so you always know where the bar begins. Nothing is installed and no audio is recorded or uploaded, everything happens locally in your browser.
Short answers for the questions people usually have before trying a utility like this.
It uses the Web Audio API with a lookahead scheduler, which times each click against the audio clock rather than a plain timer, so the tempo stays steady and precise.
Yes. Move the tempo slider or edit the exact BPM at any time and the next beats follow the new tempo immediately, without stopping.
Once the page has loaded it runs entirely in your browser, so it keeps working without a connection and nothing is sent anywhere.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Keep steady time with an accurate Web Audio metronome. Set the tempo and time signature, hit start, and follow the accented downbeat. Everything runs in your browser.
The blue dot marks the accented downbeat of each bar. Tempo can be changed while the metronome is running.