About TempoTally
A faster path from “what is this tempo?” to a stage-ready set.
TempoTally is an independent browser tool from Aurelian Syndicate. It measures the rhythm you tap, lets you save that result to a compact setlist, and gives you a clear count-in or click when it is time to play. There is no account and no cloud setlist database.
How the BPM estimate works
Every tap creates a timestamp in your browser. TempoTally measures the milliseconds between recent taps and uses the standard relationship BPM = 60,000 ÷ milliseconds per beat.
Human taps are never perfectly even. A short rolling window, median-based filtering, and recency weighting prevent one accidental tap from overpowering an otherwise steady pattern. Confidence describes how consistent the recent taps are; it is not a claim that TempoTally has identified a song's definitive tempo.
Half-time and double-time can both be musically reasonable. That is why the tool exposes half, current, and double interpretations instead of silently deciding which one you intended.
Private by design
Your rehearsal notes stay on your device.
Set names, song titles, keys, tempos, and performance notes are stored in your browser's local storage. The normal tool workflow does not upload them to TempoTally. You can export your own backup, and you should do so before clearing browser data or changing devices.
Read the privacy detailsWhat TempoTally does not do
- It does not listen to your microphone.
- It does not identify songs or read audio files.
- It does not synchronize setlists between devices.
- It does not replace a calibrated timing instrument.
Built for useful constraints
TempoTally is deliberately smaller than a band-management platform. It focuses on measuring, saving, ordering, backing up, and performing a set. Offline support and stage mode are progressive browser features, so their availability can vary by browser and device.
Tap estimator version 1.1 · Method last reviewed: July 24, 2026
Technical references
Stage audio is scheduled with the browser's Web Audio clock, and the optional keep-awake control follows the Screen Wake Lock API. Browser support and operating-system power rules can still affect either capability.