Free MP3 and WAV analyzer that detects musical key, BPM, and Camelot code in your browser
Guitar practice app that listens to your playing and scores chord changes and scales
Stage
Not given
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Founded
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Based in
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US
Pricing model
Free
Freemium
Pricing
Not given
Free (Practice plan): chord and scale drills, practice history, offline access, up to 7 rest days per year, one jam in C major. Sync $19.99/year or $2.99/month: adds cloud sync across devices and backup. Pro $59.99/year or $8.99/month: adds Diagnosis coaching, all jams in every key, full Songbook ac
Key features
Analyze MP3 and WAV files up to 40 MB and 10 minutes long
Display multiple key candidates with confidence scores
Tap tempo counter for manual BPM verification
Half and Double tempo options to verify different pulse counts
BPM to milliseconds calculator for delay time conversion
Camelot wheel tool for comparing related keys
Browser-based processing with no file upload required
Scale practice with note-by-note feedback
Practice progress visualization with stronghold building
Offline-first web app with device-local storage
Jam with looping band in multiple keys and scales
Cloud sync across multiple devices
Diagnosis coaching for chord change weaknesses
Songbook showing playable real songs
Rest days system to maintain practice streak
Data export to file
What makes it different
No file upload needed; all analysis happens in your browser for privacy
Shows multiple candidate results instead of forcing a single answer
Free to use with no signup or account requirements
Includes interactive practice tools with synthetic teaching examples
Samples long files from beginning, middle, and end for complete analysis
Listens to your actual playing and scores every change in real-time via audio
No account, ads, or tracking required for free practice
All practice data stored locally on your device, never uploaded
Find Key & BPM
Strumhold