Observed arrival · 2026-09-17

Run Pulse Adds a Running Tempo Track to Your Music

run-tempo.xyz Observed source

Editorial interest 78/100 Selection signal · not a rating of the site

A browser tool lets runners upload MP3, WAV, or M4A files and overlay a customizable BPM metronome before downloading the result.

Landing page captured for the 2026-09-17 issue.

Field notes

The tool accepts up to five MP3, WAV, or M4A files per batch, with a stated 50MB limit per file. Users set a target beats-per-minute value and adjust the metronome volume before downloading the resulting workout tracks. A sample-music option provides a way to test the workflow without supplying personal audio. The site states that processing occurs in the browser and that music remains on the user’s device, though that privacy claim is not independently verified by the extract.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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