Browser-based music analyser with 16 tools. BPM is one of them — alongside key, Camelot, stems, MIDI, chord finder, vocal autotune, vertical clip maker, tuner, metronome, spectrum and tempo / pitch shifters.
Beatscanner does one thing — BPM. SignalKey does that plus key, Camelot, stems, MIDI, chord pull, LUFS and live tools. Same browser tab, no install.
No spin — what each tool actually does and where the lines are drawn.
Browser-based music analyser with 16 tools. BPM is one of them — alongside key, Camelot, stems, MIDI, chord finder, vocal autotune, vertical clip maker, tuner, metronome, spectrum and tempo / pitch shifters.
Specialist BPM-detection desktop app. Fast and focused. Useful when you only ever need tempo and prefer a dedicated tool over a multi-feature web app.
SignalKey's free tier covers all 16 tools. Beatscanner's pricing is per-license.
What each tool does, what it doesn't, and where the gaps are honest.
| Feature | SignalKey | Beatscanner |
|---|---|---|
| BPM detection accuracy | ±0.5 BPM | ±0.5 BPM |
| Tempo timeline / changes | ||
| Half / double-time alternates | ||
| Tap tempo (manual capture) |
| Feature | SignalKey | Beatscanner |
|---|---|---|
| Key + Camelot | ||
| Stem separation | ||
| Audio → MIDI | ||
| Chord detection | ||
| LUFS / mastering metrics | ||
| Live tuner / metronome / spectrum |
| Feature | SignalKey | Beatscanner |
|---|---|---|
| Browser-based | ||
| Desktop app | ||
| Mobile (web) |
Both tools are good. The right answer depends on what you're actually doing.
Both detect within ±0.5 BPM on modern productions. Edge cases (live recordings, free-time intros, heavy swing) sit at ±1 BPM in either tool.
Methodology: Researched April 2026 against publicly-listed Beatscanner features at time of writing. If anything in this comparison reads as inaccurate, please email hello@signalkey.io and we'll update.
Drop a song and see the analysis pass — BPM, key, Camelot, stems, MIDI, LUFS — in one go. Free forever.