Audio analyser. Drop any file (MP3, WAV, FLAC) and get BPM, key, Camelot, stems, MIDI, energy, danceability and a full mastering profile. Works on tracks that don't exist in any database.
Tunebat is great for looking up BPM and key on songs that exist in their database. SignalKey lets you analyse any audio file — your unreleased demos, obscure b-sides, your own mixes — directly from upload.
No spin — what each tool actually does and where the lines are drawn.
Audio analyser. Drop any file (MP3, WAV, FLAC) and get BPM, key, Camelot, stems, MIDI, energy, danceability and a full mastering profile. Works on tracks that don't exist in any database.
Music database that surfaces BPM, key, Camelot and energy for popular streaming tracks. Excellent for quick lookups on songs you can name. Free with sane daily caps.
Both products are free at the entry point with similar ad-funded models.
What each tool does, what it doesn't, and where the gaps are honest.
| Feature | SignalKey | Tunebat |
|---|---|---|
| Upload your own audio fileTunebat looks up tracks in their pre-indexed database. SignalKey analyses whatever you upload. | ||
| Look up known songs by nameSignalKey has 74 popular songs catalogued; Tunebat indexes hundreds of thousands. | ||
| Analyse unreleased / unsigned material | ||
| Analyse a cappella / loop / sample packs |
| Feature | SignalKey | Tunebat |
|---|---|---|
| BPM | ||
| Key + Camelot | ||
| Energy / danceability / valence | ||
| Stem separation | ||
| Audio → MIDI | ||
| Chord progression | ||
| LUFS / mastering metrics |
| Feature | SignalKey | Tunebat |
|---|---|---|
| Search popular tracks by name | ||
| Browse charts by BPM / key / mood | ||
| Per-artist song catalogue |
Both tools are good. The right answer depends on what you're actually doing.
Partially — we have 74 popular tracks fully catalogued at /song. For broader coverage, Tunebat's database is larger. For a song you have on disk, upload to SignalKey is faster than typing into Tunebat.
Methodology: Researched April 2026 against the public Tunebat product. Comparison focuses on functional differences (database lookup vs. direct file analysis), not subjective accuracy testing. 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.