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Mixed In Key vs BPM Detect: catalog facts
Mixed In Key	BPM Detect
Paid Commercial software bought through the developer's online store.	Free Free and open source under the GPL-3.0-or-later.
Windows, macOS	Linux
Detects musical key of tracks for harmonic mixing Rates energy level to help plan a DJ set	Automatic BPM detection without manual tapping Actively maintained with translations and a changelog
Paid software with no free tier Useful mainly for DJs rather than general listeners	Single-purpose tool Small project with limited documentation
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.