Observed arrival · 2026-10-23
BeatRadar’s ten-second rule for finding a song’s tempo
BeatRadar says it uses a phone’s microphone to estimate a song’s BPM and flags it when the tempo stays within a chosen range.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People matching music to workout tempos
- Worth noticing
- Its match timer forgives brief dips under 1.5 seconds and requires ten seconds in range.
Field notes
The page lays out the detector’s timing in stages: an initial guess is dimmed and excluded, readings settle, and the in-range ring fills before a match is counted. It reports noise testing on a Samsung phone across 39 clips, with results falling from 96% when no background noise was added to 65% when noise matched the music’s volume. The screen is labeled an example, and the Android release is still marked as coming soon.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
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